40179491 has 8 divisors (see below), whose sum is σ = 43990464. Its totient is φ = 36394920.

The previous prime is 40179487. The next prime is 40179533. The reversal of 40179491 is 19497104.

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

It is a cyclic number.

It is not a de Polignac number, because 40179491 - 2² = 40179487 is a prime.

It is a super-2 number, since 2×40179491² = 3228782994038162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40179691) 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, 3341 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (5498808).

Almost surely, 2^40179491 is an apocalyptic number.

40179491 is a deficient number, since it is larger than the sum of its proper divisors (3810973).

40179491 is a wasteful number, since it uses less digits than its factorization.

40179491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 40179491 is about 6338.7294468213. The cubic root of 40179491 is about 342.5059682481.

The spelling of 40179491 in words is "forty million, one hundred seventy-nine thousand, four hundred ninety-one".