40172379 has 8 divisors (see below), whose sum is σ = 57683472. Its totient is φ = 24721440.

The previous prime is 40172359. The next prime is 40172381. The reversal of 40172379 is 97327104.

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

It is not a de Polignac number, because 40172379 - 2⁵ = 40172347 is a prime.

It is a super-2 number, since 2×40172379² = 3227640069039282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40172339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514992 + ... + 515069.

It is an arithmetic number, because the mean of its divisors is an integer number (7210434).

Almost surely, 2^40172379 is an apocalyptic number.

40172379 is a deficient number, since it is larger than the sum of its proper divisors (17511093).

40172379 is a wasteful number, since it uses less digits than its factorization.

40172379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030077.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 40172379 is about 6338.1684262885. The cubic root of 40172379 is about 342.4857585497.

The spelling of 40172379 in words is "forty million, one hundred seventy-two thousand, three hundred seventy-nine".