40173994 has 16 divisors (see below), whose sum is σ = 68979456. Its totient is φ = 17190000.

The previous prime is 40173967. The next prime is 40174007. The reversal of 40173994 is 49937104.

It is a super-2 number, since 2×40173994² = 3227899587824072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8604 + ... + 12424.

It is an arithmetic number, because the mean of its divisors is an integer number (4311216).

Almost surely, 2^40173994 is an apocalyptic number.

40173994 is a deficient number, since it is larger than the sum of its proper divisors (28805462).

40173994 is a wasteful number, since it uses less digits than its factorization.

40173994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 40173994 is about 6338.2958277442. The cubic root of 40173994 is about 342.4903479973.

The spelling of 40173994 in words is "forty million, one hundred seventy-three thousand, nine hundred ninety-four".