40365940 has 24 divisors (see below), whose sum is σ = 85220352. Its totient is φ = 16060320.

The previous prime is 40365929. The next prime is 40365953. The reversal of 40365940 is 4956304.

It is a super-2 number, since 2×40365940² = 3258818224167200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464 + ... + 9103.

It is an arithmetic number, because the mean of its divisors is an integer number (3550848).

Almost surely, 2^40365940 is an apocalyptic number.

It is an amenable number.

40365940 is an abundant number, since it is smaller than the sum of its proper divisors (44854412).

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

40365940 is a wasteful number, since it uses less digits than its factorization.

40365940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10767 (or 10765 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 40365940 is about 6353.4195517060. The cubic root of 40365940 is about 343.0349393643.

The spelling of 40365940 in words is "forty million, three hundred sixty-five thousand, nine hundred forty".