16139395 has 4 divisors (see below), whose sum is σ = 19367280. Its totient is φ = 12911512.

The previous prime is 16139371. The next prime is 16139407. The reversal of 16139395 is 59393161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16139395 - 2¹⁵ = 16106627 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613935 + ... + 1613944.

It is an arithmetic number, because the mean of its divisors is an integer number (4841820).

Almost surely, 2^16139395 is an apocalyptic number.

16139395 is a deficient number, since it is larger than the sum of its proper divisors (3227885).

16139395 is an equidigital number, since it uses as much as digits as its factorization.

16139395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227884.

The product of its digits is 21870, while the sum is 37.

The square root of 16139395 is about 4017.3865883183. The cubic root of 16139395 is about 252.7138729715.

The spelling of 16139395 in words is "sixteen million, one hundred thirty-nine thousand, three hundred ninety-five".