307979 has 4 divisors (see below), whose sum is σ = 351984. Its totient is φ = 263976.

The previous prime is 307969. The next prime is 308003. The reversal of 307979 is 979703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979703 = 587 ⋅1669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-307979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307919) 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, 21992 + ... + 22005.

It is an arithmetic number, because the mean of its divisors is an integer number (87996).

2³⁰⁷⁹⁷⁹ is an apocalyptic number.

307979 is a deficient number, since it is larger than the sum of its proper divisors (44005).

307979 is an equidigital number, since it uses as much as digits as its factorization.

307979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44004.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 307979 is about 554.9585570112. The cubic root of 307979 is about 67.5315992881.

The spelling of 307979 in words is "three hundred seven thousand, nine hundred seventy-nine".