137698989 has 16 divisors (see below), whose sum is σ = 190451520. Its totient is φ = 88390400.

The previous prime is 137698987. The next prime is 137699011. The reversal of 137698989 is 989896731.

137698989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 137698989 - 2¹ = 137698987 is a prime.

It is a super-2 number, since 2×137698989² = 37922023143244242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137698987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32914 + ... + 36860.

It is an arithmetic number, because the mean of its divisors is an integer number (11903220).

Almost surely, 2^137698989 is an apocalyptic number.

It is an amenable number.

137698989 is a deficient number, since it is larger than the sum of its proper divisors (52752531).

137698989 is a wasteful number, since it uses less digits than its factorization.

137698989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380.

The product of its digits is 5878656, while the sum is 60.

The square root of 137698989 is about 11734.5212514188. The cubic root of 137698989 is about 516.3889224276.

The spelling of 137698989 in words is "one hundred thirty-seven million, six hundred ninety-eight thousand, nine hundred eighty-nine".