137939989 has 12 divisors (see below), whose sum is σ = 159856128. Its totient is φ = 118020800.

The previous prime is 137939953. The next prime is 137940017. The reversal of 137939989 is 989939731.

It is not a de Polignac number, because 137939989 - 2¹⁹ = 137415701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137939909) 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 11 ways as a sum of consecutive naturals, for example, 18517 + ... + 24874.

It is an arithmetic number, because the mean of its divisors is an integer number (13321344).

Almost surely, 2^137939989 is an apocalyptic number.

It is an amenable number.

137939989 is a deficient number, since it is larger than the sum of its proper divisors (21916139).

137939989 is a wasteful number, since it uses less digits than its factorization.

137939989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43436 (or 43419 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 58.

The square root of 137939989 is about 11744.7856089415. The cubic root of 137939989 is about 516.6900071777.

The spelling of 137939989 in words is "one hundred thirty-seven million, nine hundred thirty-nine thousand, nine hundred eighty-nine".