84403127749 has 4 divisors (see below), whose sum is σ = 87313580460. Its totient is φ = 81492675040.

The previous prime is 84403127747. The next prime is 84403127779. The reversal of 84403127749 is 94772130448.

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 22866883524 + 61536244225 = 151218^2 + 248065^2 .

It is a cyclic number.

It is not a de Polignac number, because 84403127749 - 2¹ = 84403127747 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84403127741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455226312 + ... + 1455226369.

It is an arithmetic number, because the mean of its divisors is an integer number (21828395115).

Almost surely, 2^84403127749 is an apocalyptic number.

It is an amenable number.

84403127749 is a deficient number, since it is larger than the sum of its proper divisors (2910452711).

84403127749 is a wasteful number, since it uses less digits than its factorization.

84403127749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910452710.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 84403127749 in words is "eighty-four billion, four hundred three million, one hundred twenty-seven thousand, seven hundred forty-nine".