137959217 has 4 divisors (see below), whose sum is σ = 150500976. Its totient is φ = 125417460.

The previous prime is 137959193. The next prime is 137959223. The reversal of 137959217 is 712959731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137959217 - 2⁶ = 137959153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137959277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6270863 + ... + 6270884.

It is an arithmetic number, because the mean of its divisors is an integer number (37625244).

Almost surely, 2^137959217 is an apocalyptic number.

It is an amenable number.

137959217 is a deficient number, since it is larger than the sum of its proper divisors (12541759).

137959217 is a wasteful number, since it uses less digits than its factorization.

137959217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12541758.

The product of its digits is 119070, while the sum is 44.

The square root of 137959217 is about 11745.6041564493. The cubic root of 137959217 is about 516.7140138827.

The spelling of 137959217 in words is "one hundred thirty-seven million, nine hundred fifty-nine thousand, two hundred seventeen".