472398891 has 8 divisors (see below), whose sum is σ = 635980800. Its totient is φ = 311874792.

The previous prime is 472398887. The next prime is 472398923. The reversal of 472398891 is 198893274.

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

It is not a de Polignac number, because 472398891 - 2² = 472398887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (472398821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764091 + ... + 764708.

It is an arithmetic number, because the mean of its divisors is an integer number (79497600).

Almost surely, 2^472398891 is an apocalyptic number.

472398891 is a deficient number, since it is larger than the sum of its proper divisors (163581909).

472398891 is a wasteful number, since it uses less digits than its factorization.

472398891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528905.

The product of its digits is 870912, while the sum is 51.

The square root of 472398891 is about 21734.7392668971. The cubic root of 472398891 is about 778.8185549243.

The spelling of 472398891 in words is "four hundred seventy-two million, three hundred ninety-eight thousand, eight hundred ninety-one".