472388681 has 4 divisors (see below), whose sum is σ = 482439552. Its totient is φ = 462337812.

The previous prime is 472388663. The next prime is 472388701. The reversal of 472388681 is 186883274.

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 a de Polignac number, because none of the positive numbers 2^k-472388681 is a prime.

It is a super-2 number, since 2×472388681² = 446302131873839522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 10050823 = 472388681 / (4 + 7 + 2 + 3 + 8 + 8 + 6 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472388611) 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, 5025365 + ... + 5025458.

It is an arithmetic number, because the mean of its divisors is an integer number (120609888).

Almost surely, 2^472388681 is an apocalyptic number.

It is an amenable number.

472388681 is a deficient number, since it is larger than the sum of its proper divisors (10050871).

472388681 is a wasteful number, since it uses less digits than its factorization.

472388681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050870.

The product of its digits is 516096, while the sum is 47.

The square root of 472388681 is about 21734.5043881842. The cubic root of 472388681 is about 778.8129439919.

The spelling of 472388681 in words is "four hundred seventy-two million, three hundred eighty-eight thousand, six hundred eighty-one".