137349869 has 4 divisors (see below), whose sum is σ = 140544096. Its totient is φ = 134155644.

The previous prime is 137349853. The next prime is 137349881. The reversal of 137349869 is 968943731.

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 137349869 - 2⁴ = 137349853 is a prime.

It is a super-2 number, since 2×137349869² = 37729973028634322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137349889) 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, 1597049 + ... + 1597134.

It is an arithmetic number, because the mean of its divisors is an integer number (35136024).

Almost surely, 2^137349869 is an apocalyptic number.

It is an amenable number.

137349869 is a deficient number, since it is larger than the sum of its proper divisors (3194227).

137349869 is an equidigital number, since it uses as much as digits as its factorization.

137349869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194226.

The product of its digits is 979776, while the sum is 50.

The square root of 137349869 is about 11719.6360438369. The cubic root of 137349869 is about 515.9521381102.

The spelling of 137349869 in words is "one hundred thirty-seven million, three hundred forty-nine thousand, eight hundred sixty-nine".