40989178 has 8 divisors (see below), whose sum is σ = 61682400. Its totient is φ = 20428380.

The previous prime is 40989149. The next prime is 40989181. The reversal of 40989178 is 87198904.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40989178² = 3360225426231368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32328 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (7710300).

Almost surely, 2^40989178 is an apocalyptic number.

40989178 is a deficient number, since it is larger than the sum of its proper divisors (20693222).

40989178 is a wasteful number, since it uses less digits than its factorization.

40989178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66212.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 40989178 is about 6402.2791254365. The cubic root of 40989178 is about 344.7913826637.

The spelling of 40989178 in words is "forty million, nine hundred eighty-nine thousand, one hundred seventy-eight".