472017091 has 16 divisors (see below), whose sum is σ = 584808448. Its totient is φ = 370980000.

The previous prime is 472017083. The next prime is 472017097. The reversal of 472017091 is 190710274.

It is a 5-Lehmer number, since φ(472017091) divides (472017091-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 472017091 - 2³ = 472017083 is a prime.

It is a super-2 number, since 2×472017091² = 445600268392204562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (472017097) 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, 3435 + ... + 30916.

It is an arithmetic number, because the mean of its divisors is an integer number (36550528).

Almost surely, 2^472017091 is an apocalyptic number.

472017091 is the 13741-st heptagonal number.

472017091 is a deficient number, since it is larger than the sum of its proper divisors (112791357).

472017091 is a wasteful number, since it uses less digits than its factorization.

472017091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34522.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 472017091 is about 21725.9543173597. The cubic root of 472017091 is about 778.6086806886.

The spelling of 472017091 in words is "four hundred seventy-two million, seventeen thousand, ninety-one".