40865190 has 32 divisors (see below), whose sum is σ = 98984160. Its totient is φ = 10796544.

The previous prime is 40865189. The next prime is 40865191. The reversal of 40865190 is 9156804.

It is an interprime number because it is at equal distance from previous prime (40865189) and next prime (40865191).

It is a super-2 number, since 2×40865190² = 3339927507472200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40865191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2979 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (3093255).

Almost surely, 2^40865190 is an apocalyptic number.

40865190 is an abundant number, since it is smaller than the sum of its proper divisors (58118970).

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

40865190 is a wasteful number, since it uses less digits than its factorization.

40865190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12616.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 40865190 is about 6392.5886775234. The cubic root of 40865190 is about 344.4433788459.

The spelling of 40865190 in words is "forty million, eight hundred sixty-five thousand, one hundred ninety".