479231999969 has 2 divisors, whose sum is σ = 479231999970. Its totient is φ = 479231999968.

The previous prime is 479231999947. The next prime is 479232000007. The reversal of 479231999969 is 969999132974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378578092369 + 100653907600 = 615287^2 + 317260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479231999969 is a prime.

It is a super-2 number, since 2×479231999969² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 479231999969.

It is not a weakly prime, because it can be changed into another prime (479231999929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239615999984 + 239615999985.

It is an arithmetic number, because the mean of its divisors is an integer number (239615999985).

Almost surely, 2^479231999969 is an apocalyptic number.

It is an amenable number.

479231999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

479231999969 is an equidigital number, since it uses as much as digits as its factorization.

479231999969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 535692528, while the sum is 77.

The spelling of 479231999969 in words is "four hundred seventy-nine billion, two hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred sixty-nine".