137789929 has 2 divisors, whose sum is σ = 137789930. Its totient is φ = 137789928.

The previous prime is 137789921. The next prime is 137789959. The reversal of 137789929 is 929987731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114490000 + 23299929 = 10700^2 + 4827^2 .

It is a cyclic number.

It is not a de Polignac number, because 137789929 - 2³ = 137789921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137789929.

It is not a weakly prime, because it can be changed into another prime (137789921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68894964 + 68894965.

It is an arithmetic number, because the mean of its divisors is an integer number (68894965).

Almost surely, 2^137789929 is an apocalyptic number.

It is an amenable number.

137789929 is a deficient number, since it is larger than the sum of its proper divisors (1).

137789929 is an equidigital number, since it uses as much as digits as its factorization.

137789929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 55.

The square root of 137789929 is about 11738.3955036453. The cubic root of 137789929 is about 516.5025763108.

The spelling of 137789929 in words is "one hundred thirty-seven million, seven hundred eighty-nine thousand, nine hundred twenty-nine".