40655944 has 16 divisors (see below), whose sum is σ = 87120000. Its totient is φ = 17423952.

The previous prime is 40655939. The next prime is 40655957. The reversal of 40655944 is 44955604.

It is a super-2 number, since 2×40655944² = 3305811565062272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362944 + ... + 363055.

It is an arithmetic number, because the mean of its divisors is an integer number (5445000).

Almost surely, 2^40655944 is an apocalyptic number.

It is an amenable number.

40655944 is an abundant number, since it is smaller than the sum of its proper divisors (46464056).

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

40655944 is a wasteful number, since it uses less digits than its factorization.

40655944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726012 (or 726008 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 40655944 is about 6376.2013769956. The cubic root of 40655944 is about 343.8544769370.

The spelling of 40655944 in words is "forty million, six hundred fifty-five thousand, nine hundred forty-four".