479215881 has 9 divisors (see below), whose sum is σ = 692295591. Its totient is φ = 319433472.

The previous prime is 479215861. The next prime is 479215883. The reversal of 479215881 is 188512974.

The square root of 479215881 is 21891.

It is a perfect power (a square), and thus also a powerful number.

479215881 is a `hidden beast` number, since 47 + 9 + 21 + 588 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 162945225 + 316270656 = 12765^2 + 17784^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 479215881 - 2⁹ = 479215369 is a prime.

It is a super-2 number, since 2×479215881² = 459295721205212322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (479215883) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 62025 + ... + 69321.

Almost surely, 2^479215881 is an apocalyptic number.

479215881 is the 21891-st square number.

479215881 is the 10946-th centered octagonal number.

It is an amenable number.

479215881 is a deficient number, since it is larger than the sum of its proper divisors (213079710).

479215881 is an frugal number, since it uses more digits than its factorization.

479215881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14600 (or 7300 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The cubic root of 479215881 is about 782.5469455719.

The spelling of 479215881 in words is "four hundred seventy-nine million, two hundred fifteen thousand, eight hundred eighty-one".