479981693 has 4 divisors (see below), whose sum is σ = 480032508. Its totient is φ = 479930880.

The previous prime is 479981683. The next prime is 479981713. The reversal of 479981693 is 396189974.

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 2 ways, for example, as 422631364 + 57350329 = 20558^2 + 7573^2 .

It is a cyclic number.

It is not a de Polignac number, because 479981693 - 2¹⁴ = 479965309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479981683) 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, 6596 + ... + 31677.

It is an arithmetic number, because the mean of its divisors is an integer number (120008127).

Almost surely, 2^479981693 is an apocalyptic number.

It is an amenable number.

479981693 is a deficient number, since it is larger than the sum of its proper divisors (50815).

479981693 is a wasteful number, since it uses less digits than its factorization.

479981693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50814.

The product of its digits is 2939328, while the sum is 56.

The square root of 479981693 is about 21908.4844980204. The cubic root of 479981693 is about 782.9635740125.

The spelling of 479981693 in words is "four hundred seventy-nine million, nine hundred eighty-one thousand, six hundred ninety-three".