137616399 has 6 divisors (see below), whose sum is σ = 198779256. Its totient is φ = 91744260.

The previous prime is 137616371. The next prime is 137616443. The reversal of 137616399 is 993616731.

137616399 is a `hidden beast` number, since 1 + 3 + 7 + 6 + 1 + 639 + 9 = 666.

137616399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137616399 - 2¹² = 137612303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137616359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7645347 + ... + 7645364.

It is an arithmetic number, because the mean of its divisors is an integer number (33129876).

Almost surely, 2^137616399 is an apocalyptic number.

137616399 is a deficient number, since it is larger than the sum of its proper divisors (61162857).

137616399 is a wasteful number, since it uses less digits than its factorization.

137616399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15290717 (or 15290714 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 137616399 is about 11731.0016196402. The cubic root of 137616399 is about 516.2856607384.

The spelling of 137616399 in words is "one hundred thirty-seven million, six hundred sixteen thousand, three hundred ninety-nine".