137375999 has 4 divisors (see below), whose sum is σ = 139257936. Its totient is φ = 135494064.

The previous prime is 137375957. The next prime is 137376047. The reversal of 137375999 is 999573731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137375999 - 2¹⁶ = 137310463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137375999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137375939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940859 + ... + 941004.

It is an arithmetic number, because the mean of its divisors is an integer number (34814484).

Almost surely, 2^137375999 is an apocalyptic number.

137375999 is a deficient number, since it is larger than the sum of its proper divisors (1881937).

137375999 is an equidigital number, since it uses as much as digits as its factorization.

137375999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881936.

The product of its digits is 1607445, while the sum is 53.

The square root of 137375999 is about 11720.7507865324. The cubic root of 137375999 is about 515.9848549828.

The spelling of 137375999 in words is "one hundred thirty-seven million, three hundred seventy-five thousand, nine hundred ninety-nine".