137965799 has 4 divisors (see below), whose sum is σ = 143964336. Its totient is φ = 131967264.

The previous prime is 137965787. The next prime is 137965811. The reversal of 137965799 is 997569731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997569731 = 23 ⋅43372597.

It is an interprime number because it is at equal distance from previous prime (137965787) and next prime (137965811).

It is a cyclic number.

It is not a de Polignac number, because 137965799 - 2²⁴ = 121188583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137965759) 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, 2999234 + ... + 2999279.

It is an arithmetic number, because the mean of its divisors is an integer number (35991084).

Almost surely, 2^137965799 is an apocalyptic number.

137965799 is a deficient number, since it is larger than the sum of its proper divisors (5998537).

137965799 is an equidigital number, since it uses as much as digits as its factorization.

137965799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998536.

The product of its digits is 3214890, while the sum is 56.

The square root of 137965799 is about 11745.8843430369. The cubic root of 137965799 is about 516.7222311845.

The spelling of 137965799 in words is "one hundred thirty-seven million, nine hundred sixty-five thousand, seven hundred ninety-nine".