40072179 has 16 divisors (see below), whose sum is σ = 64654848. Its totient is φ = 21551232.

The previous prime is 40072177. The next prime is 40072217. The reversal of 40072179 is 97127004.

It is not a de Polignac number, because 40072179 - 2¹ = 40072177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40072177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55767 + ... + 56480.

It is an arithmetic number, because the mean of its divisors is an integer number (4040928).

Almost surely, 2^40072179 is an apocalyptic number.

40072179 is a deficient number, since it is larger than the sum of its proper divisors (24582669).

40072179 is a wasteful number, since it uses less digits than its factorization.

40072179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112274.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 40072179 is about 6330.2589994407. The cubic root of 40072179 is about 342.2007729845.

The spelling of 40072179 in words is "forty million, seventy-two thousand, one hundred seventy-nine".