307679399 has 2 divisors, whose sum is σ = 307679400. Its totient is φ = 307679398.

The previous prime is 307679387. The next prime is 307679429. The reversal of 307679399 is 993976703.

It is a weak prime.

It is an emirp because it is prime and its reverse (993976703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 307679399 - 2²⁰ = 306630823 is a prime.

It is a super-2 number, since 2×307679399² = 189333225138002402, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 307679399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (307679329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153839699 + 153839700.

It is an arithmetic number, because the mean of its divisors is an integer number (153839700).

Almost surely, 2^307679399 is an apocalyptic number.

307679399 is a deficient number, since it is larger than the sum of its proper divisors (1).

307679399 is an equidigital number, since it uses as much as digits as its factorization.

307679399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1928934, while the sum is 53.

The square root of 307679399 is about 17540.7924279378. The cubic root of 307679399 is about 675.0969400782.

The spelling of 307679399 in words is "three hundred seven million, six hundred seventy-nine thousand, three hundred ninety-nine".