137913889 has 4 divisors (see below), whose sum is σ = 138149424. Its totient is φ = 137678356.

The previous prime is 137913871. The next prime is 137913983. The reversal of 137913889 is 988319731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137913889 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137913859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116887 + ... + 118060.

It is an arithmetic number, because the mean of its divisors is an integer number (34537356).

Almost surely, 2^137913889 is an apocalyptic number.

It is an amenable number.

137913889 is a deficient number, since it is larger than the sum of its proper divisors (235535).

137913889 is an equidigital number, since it uses as much as digits as its factorization.

137913889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235534.

The product of its digits is 326592, while the sum is 49.

The square root of 137913889 is about 11743.6744249830. The cubic root of 137913889 is about 516.6574170156.

The spelling of 137913889 in words is "one hundred thirty-seven million, nine hundred thirteen thousand, eight hundred eighty-nine".