137923291 has 4 divisors (see below), whose sum is σ = 150461784. Its totient is φ = 125384800.

The previous prime is 137923271. The next prime is 137923301. The reversal of 137923291 is 192329731.

It is a happy number.

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 137923291 - 2⁹ = 137922779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137923291.

It is not an unprimeable number, because it can be changed into a prime (137923271) 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, 6269230 + ... + 6269251.

It is an arithmetic number, because the mean of its divisors is an integer number (37615446).

Almost surely, 2^137923291 is an apocalyptic number.

137923291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

137923291 is a deficient number, since it is larger than the sum of its proper divisors (12538493).

137923291 is a wasteful number, since it uses less digits than its factorization.

137923291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12538492.

The product of its digits is 20412, while the sum is 37.

The square root of 137923291 is about 11744.0747187678. The cubic root of 137923291 is about 516.6691574397.

The spelling of 137923291 in words is "one hundred thirty-seven million, nine hundred twenty-three thousand, two hundred ninety-one".