40390875 has 96 divisors (see below), whose sum is σ = 87220224. Its totient is φ = 17582400.

The previous prime is 40390859. The next prime is 40390879. The reversal of 40390875 is 57809304.

It is not a de Polignac number, because 40390875 - 2⁴ = 40390859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40390879) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 181014 + ... + 181236.

It is an arithmetic number, because the mean of its divisors is an integer number (908544).

Almost surely, 2^40390875 is an apocalyptic number.

40390875 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40390875 is an abundant number, since it is smaller than the sum of its proper divisors (46829349).

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

40390875 is a wasteful number, since it uses less digits than its factorization.

40390875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 40390875 is about 6355.3815778441. The cubic root of 40390875 is about 343.1055584354.

The spelling of 40390875 in words is "forty million, three hundred ninety thousand, eight hundred seventy-five".