16390139 has 8 divisors (see below), whose sum is σ = 16607952. Its totient is φ = 16174080.

The previous prime is 16390123. The next prime is 16390163. The reversal of 16390139 is 93109361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16390139 - 2⁴ = 16390123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16390109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31199 + ... + 31719.

It is an arithmetic number, because the mean of its divisors is an integer number (2075994).

Almost surely, 2^16390139 is an apocalyptic number.

16390139 is a deficient number, since it is larger than the sum of its proper divisors (217813).

16390139 is a wasteful number, since it uses less digits than its factorization.

16390139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877.

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

The square root of 16390139 is about 4048.4736629994. The cubic root of 16390139 is about 254.0158865381.

The spelling of 16390139 in words is "sixteen million, three hundred ninety thousand, one hundred thirty-nine".