306399732479 has 4 divisors (see below), whose sum is σ = 308234461584. Its totient is φ = 304565003376.

The previous prime is 306399732469. The next prime is 306399732497. The reversal of 306399732479 is 974237993603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306399732479 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 (306399732469) 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, 917364302 + ... + 917364635.

It is an arithmetic number, because the mean of its divisors is an integer number (77058615396).

Almost surely, 2^306399732479 is an apocalyptic number.

306399732479 is a deficient number, since it is larger than the sum of its proper divisors (1834729105).

306399732479 is a wasteful number, since it uses less digits than its factorization.

306399732479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834729104.

The product of its (nonzero) digits is 46294416, while the sum is 62.

The spelling of 306399732479 in words is "three hundred six billion, three hundred ninety-nine million, seven hundred thirty-two thousand, four hundred seventy-nine".