13898139 has 24 divisors (see below), whose sum is σ = 20098512. Its totient is φ = 8536320.

The previous prime is 13898119. The next prime is 13898147. The reversal of 13898139 is 93189831.

It is a happy number.

It is not a de Polignac number, because 13898139 - 2⁸ = 13897883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13898139.

It is not an unprimeable number, because it can be changed into a prime (13898119) 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 in 23 ways as a sum of consecutive naturals, for example, 44247 + ... + 44559.

It is an arithmetic number, because the mean of its divisors is an integer number (837438).

Almost surely, 2^13898139 is an apocalyptic number.

13898139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13898139 is a deficient number, since it is larger than the sum of its proper divisors (6200373).

13898139 is a wasteful number, since it uses less digits than its factorization.

13898139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 376 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 13898139 is about 3728.0207885686. The cubic root of 13898139 is about 240.4282804171.

The spelling of 13898139 in words is "thirteen million, eight hundred ninety-eight thousand, one hundred thirty-nine".