137977889 has 8 divisors (see below), whose sum is σ = 157864128. Its totient is φ = 118135440.

The previous prime is 137977883. The next prime is 137977907. The reversal of 137977889 is 988779731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137977889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137977883) 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, 3887 + ... + 17060.

It is an arithmetic number, because the mean of its divisors is an integer number (19733016).

Almost surely, 2^137977889 is an apocalyptic number.

It is an amenable number.

137977889 is a deficient number, since it is larger than the sum of its proper divisors (19886239).

137977889 is an equidigital number, since it uses as much as digits as its factorization.

137977889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21895.

The product of its digits is 5334336, while the sum is 59.

The square root of 137977889 is about 11746.3989801130. The cubic root of 137977889 is about 516.7373242712.

The spelling of 137977889 in words is "one hundred thirty-seven million, nine hundred seventy-seven thousand, eight hundred eighty-nine".