16939139 has 8 divisors (see below), whose sum is σ = 19624800. Its totient is φ = 14319936.

The previous prime is 16939093. The next prime is 16939147. The reversal of 16939139 is 93193961.

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 16939139 - 2¹⁶ = 16873603 is a prime.

It is a super-2 number, since 2×16939139² = 573868860122642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16939096 and 16939105.

It is not an unprimeable number, because it can be changed into a prime (16939159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16064 + ... + 17085.

It is an arithmetic number, because the mean of its divisors is an integer number (2453100).

Almost surely, 2^16939139 is an apocalyptic number.

16939139 is a deficient number, since it is larger than the sum of its proper divisors (2685661).

16939139 is an equidigital number, since it uses as much as digits as its factorization.

16939139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33229.

The product of its digits is 39366, while the sum is 41.

The square root of 16939139 is about 4115.7185277907. The cubic root of 16939139 is about 256.8209475169.

The spelling of 16939139 in words is "sixteen million, nine hundred thirty-nine thousand, one hundred thirty-nine".