40818855 has 64 divisors (see below), whose sum is σ = 82944000. Its totient is φ = 16648320.

The previous prime is 40818839. The next prime is 40818857. The reversal of 40818855 is 55881804.

Together with 42125144 it forms a betrothed pair.

It is not a de Polignac number, because 40818855 - 2⁴ = 40818839 is a prime.

It is a super-2 number, since 2×40818855² = 3332357847022050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818857) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67846 + ... + 68444.

It is an arithmetic number, because the mean of its divisors is an integer number (1296000).

Almost surely, 2^40818855 is an apocalyptic number.

40818855 is an abundant number, since it is smaller than the sum of its proper divisors (42125145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40818855 is a wasteful number, since it uses less digits than its factorization.

40818855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 40818855 is about 6388.9635309649. The cubic root of 40818855 is about 344.3131472253.

The spelling of 40818855 in words is "forty million, eight hundred eighteen thousand, eight hundred fifty-five".