40393855 has 8 divisors (see below), whose sum is σ = 48606912. Its totient is φ = 32225568.

The previous prime is 40393841. The next prime is 40393877. The reversal of 40393855 is 55839304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40393855 - 2¹¹ = 40391807 is a prime.

It is a super-2 number, since 2×40393855² = 3263327043522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9172 + ... + 12841.

It is an arithmetic number, because the mean of its divisors is an integer number (6075864).

Almost surely, 2^40393855 is an apocalyptic number.

40393855 is a deficient number, since it is larger than the sum of its proper divisors (8213057).

40393855 is a wasteful number, since it uses less digits than its factorization.

40393855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22385.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 40393855 is about 6355.6160204971. The cubic root of 40393855 is about 343.1139962275.

The spelling of 40393855 in words is "forty million, three hundred ninety-three thousand, eight hundred fifty-five".