137992669 has 2 divisors, whose sum is σ = 137992670. Its totient is φ = 137992668.

The previous prime is 137992661. The next prime is 137992691. The reversal of 137992669 is 966299731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112084569 + 25908100 = 10587^2 + 5090^2 .

It is a cyclic number.

It is not a de Polignac number, because 137992669 - 2³ = 137992661 is a prime.

It is a super-2 number, since 2×137992669² = 38083953395487122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137992661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68996334 + 68996335.

It is an arithmetic number, because the mean of its divisors is an integer number (68996335).

Almost surely, 2^137992669 is an apocalyptic number.

It is an amenable number.

137992669 is a deficient number, since it is larger than the sum of its proper divisors (1).

137992669 is an equidigital number, since it uses as much as digits as its factorization.

137992669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 52.

The square root of 137992669 is about 11747.0280922453. The cubic root of 137992669 is about 516.7557743408.

The spelling of 137992669 in words is "one hundred thirty-seven million, nine hundred ninety-two thousand, six hundred sixty-nine".