16139894 has 16 divisors (see below), whose sum is σ = 24979968. Its totient is φ = 7816872.

The previous prime is 16139887. The next prime is 16139897. The reversal of 16139894 is 49893161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16139897) 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, 8849 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (1561248).

Almost surely, 2^16139894 is an apocalyptic number.

16139894 is a deficient number, since it is larger than the sum of its proper divisors (8840074).

16139894 is a wasteful number, since it uses less digits than its factorization.

16139894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819.

The product of its digits is 46656, while the sum is 41.

The square root of 16139894 is about 4017.4486928896. The cubic root of 16139894 is about 252.7164774252.

The spelling of 16139894 in words is "sixteen million, one hundred thirty-nine thousand, eight hundred ninety-four".