30297939 has 16 divisors (see below), whose sum is σ = 47152128. Its totient is φ = 16944192.

The previous prime is 30297937. The next prime is 30297947. The reversal of 30297939 is 93979203.

It is not a de Polignac number, because 30297939 - 2¹ = 30297937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30297939.

It is not an unprimeable number, because it can be changed into a prime (30297937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14362 + ... + 16335.

It is an arithmetic number, because the mean of its divisors is an integer number (2947008).

Almost surely, 2^30297939 is an apocalyptic number.

30297939 is a deficient number, since it is larger than the sum of its proper divisors (16854189).

30297939 is a wasteful number, since it uses less digits than its factorization.

30297939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30754.

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 30297939 is about 5504.3563656435. The cubic root of 30297939 is about 311.7484926595.

The spelling of 30297939 in words is "thirty million, two hundred ninety-seven thousand, nine hundred thirty-nine".