16888139 has 2 divisors, whose sum is σ = 16888140. Its totient is φ = 16888138.

The previous prime is 16888099. The next prime is 16888147. The reversal of 16888139 is 93188861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16888139 - 2⁸ = 16887883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16888139.

It is not a weakly prime, because it can be changed into another prime (16888199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8444069 + 8444070.

It is an arithmetic number, because the mean of its divisors is an integer number (8444070).

Almost surely, 2^16888139 is an apocalyptic number.

16888139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16888139 is an equidigital number, since it uses as much as digits as its factorization.

16888139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 44.

The square root of 16888139 is about 4109.5180982689. The cubic root of 16888139 is about 256.5629447286.

It can be divided in two parts, 16888 and 139, that multiplied together give a palindrome (2347432).

The spelling of 16888139 in words is "sixteen million, eight hundred eighty-eight thousand, one hundred thirty-nine".