137922439 has 2 divisors, whose sum is σ = 137922440. Its totient is φ = 137922438.

The previous prime is 137922419. The next prime is 137922443. The reversal of 137922439 is 934229731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137922439 - 2¹³ = 137914247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137922419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68961219 + 68961220.

It is an arithmetic number, because the mean of its divisors is an integer number (68961220).

Almost surely, 2^137922439 is an apocalyptic number.

137922439 is a deficient number, since it is larger than the sum of its proper divisors (1).

137922439 is an equidigital number, since it uses as much as digits as its factorization.

137922439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 137922439 is about 11744.0384451006. The cubic root of 137922439 is about 516.6680935560.

The spelling of 137922439 in words is "one hundred thirty-seven million, nine hundred twenty-two thousand, four hundred thirty-nine".