40802849 has 4 divisors (see below), whose sum is σ = 40815636. Its totient is φ = 40790064.

The previous prime is 40802833. The next prime is 40802903. The reversal of 40802849 is 94820804.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19936225 + 20866624 = 4465^2 + 4568^2 .

It is a cyclic number.

It is not a de Polignac number, because 40802849 - 2⁴ = 40802833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40802819) 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, 2807 + ... + 9459.

It is an arithmetic number, because the mean of its divisors is an integer number (10203909).

Almost surely, 2^40802849 is an apocalyptic number.

It is an amenable number.

40802849 is a deficient number, since it is larger than the sum of its proper divisors (12787).

40802849 is an equidigital number, since it uses as much as digits as its factorization.

40802849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12786.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 40802849 is about 6387.7107793011. The cubic root of 40802849 is about 344.2681370069.

The spelling of 40802849 in words is "forty million, eight hundred two thousand, eight hundred forty-nine".