40799637 has 6 divisors (see below), whose sum is σ = 58932822. Its totient is φ = 27199752.

The previous prime is 40799623. The next prime is 40799659. The reversal of 40799637 is 73699704.

40799637 is a `hidden beast` number, since 4 + 0 + 7 + 9 + 9 + 637 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36108081 + 4691556 = 6009^2 + 2166^2 .

It is not a de Polignac number, because 40799637 - 2⁶ = 40799573 is a prime.

It is a super-3 number, since 3×40799637³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40799592 and 40799601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40749637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2266638 + ... + 2266655.

It is an arithmetic number, because the mean of its divisors is an integer number (9822137).

Almost surely, 2^40799637 is an apocalyptic number.

It is an amenable number.

40799637 is a deficient number, since it is larger than the sum of its proper divisors (18133185).

40799637 is a wasteful number, since it uses less digits than its factorization.

40799637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533299 (or 4533296 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 40799637 is about 6387.4593540781. The cubic root of 40799637 is about 344.2591031747.

The spelling of 40799637 in words is "forty million, seven hundred ninety-nine thousand, six hundred thirty-seven".