479291751481 has 3 divisors (see below), whose sum is σ = 479292443791. Its totient is φ = 479291059172.

The previous prime is 479291751461. The next prime is 479291751503. The reversal of 479291751481 is 184157192974.

The square root of 479291751481 is 692309.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 268592391081 + 210699360400 = 518259^2 + 459020^2 .

It is not a de Polignac number, because 479291751481 - 2¹³ = 479291743289 is a prime.

It is a super-2 number, since 2×479291751481² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479291751431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 346155 + ... + 1038463.

Almost surely, 2^479291751481 is an apocalyptic number.

479291751481 is the 692309-th square number.

479291751481 is the 346155-th centered octagonal number.

It is an amenable number.

479291751481 is a deficient number, since it is larger than the sum of its proper divisors (692310).

479291751481 is an frugal number, since it uses more digits than its factorization.

479291751481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384618 (or 692309 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 58.

The spelling of 479291751481 in words is "four hundred seventy-nine billion, two hundred ninety-one million, seven hundred fifty-one thousand, four hundred eighty-one".