16139044 has 6 divisors (see below), whose sum is σ = 28243334. Its totient is φ = 8069520.

The previous prime is 16139041. The next prime is 16139089. The reversal of 16139044 is 44093161.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 5116644 = 3320^2 + 2262^2 .

It is not an unprimeable number, because it can be changed into a prime (16139041) by changing a digit.

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 as a sum of consecutive naturals, namely, 2017377 + ... + 2017384.

Almost surely, 2^16139044 is an apocalyptic number.

It is an amenable number.

16139044 is a deficient number, since it is larger than the sum of its proper divisors (12104290).

16139044 is a wasteful number, since it uses less digits than its factorization.

16139044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034765 (or 4034763 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16139044 is about 4017.3429029646. The cubic root of 16139044 is about 252.7120409488.

The spelling of 16139044 in words is "sixteen million, one hundred thirty-nine thousand, forty-four".