30169139 has 16 divisors (see below), whose sum is σ = 40508160. Its totient is φ = 21699360.

The previous prime is 30169133. The next prime is 30169141. The reversal of 30169139 is 93196103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30169139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30169133) 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, 14069 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (2531760).

Almost surely, 2^30169139 is an apocalyptic number.

30169139 is a deficient number, since it is larger than the sum of its proper divisors (10339021).

30169139 is a wasteful number, since it uses less digits than its factorization.

30169139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30170.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 30169139 is about 5492.6440809504. The cubic root of 30169139 is about 311.3061057012.

The spelling of 30169139 in words is "thirty million, one hundred sixty-nine thousand, one hundred thirty-nine".