479571891 has 16 divisors (see below), whose sum is σ = 663398400. Its totient is φ = 307834560.

The previous prime is 479571881. The next prime is 479571899. The reversal of 479571891 is 198175974.

It is a happy number.

It is not a de Polignac number, because 479571891 - 2¹³ = 479563699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (479571899) 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, 5551 + ... + 31463.

It is an arithmetic number, because the mean of its divisors is an integer number (41462400).

Almost surely, 2^479571891 is an apocalyptic number.

479571891 is a deficient number, since it is larger than the sum of its proper divisors (183826509).

479571891 is a wasteful number, since it uses less digits than its factorization.

479571891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26146.

The product of its digits is 635040, while the sum is 51.

The square root of 479571891 is about 21899.1299142226. The cubic root of 479571891 is about 782.7406825968.

The spelling of 479571891 in words is "four hundred seventy-nine million, five hundred seventy-one thousand, eight hundred ninety-one".