30390139 has 16 divisors (see below), whose sum is σ = 35032480. Its totient is φ = 26127360.

The previous prime is 30390131. The next prime is 30390161. The reversal of 30390139 is 93109303.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30390139 - 2³ = 30390131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30390131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14059 + ... + 16075.

It is an arithmetic number, because the mean of its divisors is an integer number (2189530).

Almost surely, 2^30390139 is an apocalyptic number.

30390139 is a deficient number, since it is larger than the sum of its proper divisors (4642341).

30390139 is a wasteful number, since it uses less digits than its factorization.

30390139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110.

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 30390139 is about 5512.7251881442. The cubic root of 30390139 is about 312.0644008797.

The spelling of 30390139 in words is "thirty million, three hundred ninety thousand, one hundred thirty-nine".