472915861 has 4 divisors (see below), whose sum is σ = 515908224. Its totient is φ = 429923500.

The previous prime is 472915841. The next prime is 472915897. The reversal of 472915861 is 168519274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 472915861 - 2⁷ = 472915733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472915801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21496165 + ... + 21496186.

It is an arithmetic number, because the mean of its divisors is an integer number (128977056).

Almost surely, 2^472915861 is an apocalyptic number.

It is an amenable number.

472915861 is a deficient number, since it is larger than the sum of its proper divisors (42992363).

472915861 is a wasteful number, since it uses less digits than its factorization.

472915861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42992362.

The product of its digits is 120960, while the sum is 43.

The square root of 472915861 is about 21746.6287272303. The cubic root of 472915861 is about 779.1025515311.

The spelling of 472915861 in words is "four hundred seventy-two million, nine hundred fifteen thousand, eight hundred sixty-one".