8408292749 has 4 divisors (see below), whose sum is σ = 8566939836. Its totient is φ = 8249645664.

The previous prime is 8408292727. The next prime is 8408292779. The reversal of 8408292749 is 9472928048.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6901455625 + 1506837124 = 83075^2 + 38818^2 .

It is a cyclic number.

It is not a de Polignac number, because 8408292749 - 2²⁰ = 8407244173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 158647033 = 8408292749 / (8 + 4 + 0 + 8 + 2 + 9 + 2 + 7 + 4 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8408292749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8408292779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79323464 + ... + 79323569.

It is an arithmetic number, because the mean of its divisors is an integer number (2141734959).

Almost surely, 2^8408292749 is an apocalyptic number.

It is an amenable number.

8408292749 is a deficient number, since it is larger than the sum of its proper divisors (158647087).

8408292749 is a wasteful number, since it uses less digits than its factorization.

8408292749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158647086.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 8408292749 is about 91696.7433936451. The cubic root of 8408292749 is about 2033.4614396369.

The spelling of 8408292749 in words is "eight billion, four hundred eight million, two hundred ninety-two thousand, seven hundred forty-nine".