30979539 has 6 divisors (see below), whose sum is σ = 44748236. Its totient is φ = 20653020.

The previous prime is 30979537. The next prime is 30979541. The reversal of 30979539 is 93597903.

It is an interprime number because it is at equal distance from previous prime (30979537) and next prime (30979541).

It is not a de Polignac number, because 30979539 - 2¹ = 30979537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30979494 and 30979503.

It is not an unprimeable number, because it can be changed into a prime (30979537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1721077 + ... + 1721094.

Almost surely, 2^30979539 is an apocalyptic number.

30979539 is a deficient number, since it is larger than the sum of its proper divisors (13768697).

30979539 is a wasteful number, since it uses less digits than its factorization.

30979539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442177 (or 3442174 counting only the distinct ones).

The product of its (nonzero) digits is 229635, while the sum is 45.

The square root of 30979539 is about 5565.9266074931. The cubic root of 30979539 is about 314.0689362756.

The spelling of 30979539 in words is "thirty million, nine hundred seventy-nine thousand, five hundred thirty-nine".