40075918 has 4 divisors (see below), whose sum is σ = 60113880. Its totient is φ = 20037958.

The previous prime is 40075909. The next prime is 40075943. The reversal of 40075918 is 81957004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 10018978 + ... + 10018981.

It is an arithmetic number, because the mean of its divisors is an integer number (15028470).

Almost surely, 2^40075918 is an apocalyptic number.

40075918 is a deficient number, since it is larger than the sum of its proper divisors (20037962).

40075918 is a wasteful number, since it uses less digits than its factorization.

40075918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037961.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 40075918 is about 6330.5543201208. The cubic root of 40075918 is about 342.2114158538.

The spelling of 40075918 in words is "forty million, seventy-five thousand, nine hundred eighteen".