137969713 has 4 divisors (see below), whose sum is σ = 157679680. Its totient is φ = 118259748.

The previous prime is 137969701. The next prime is 137969719. The reversal of 137969713 is 317969731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 317969731 = 19 ⋅16735249.

It is a cyclic number.

It is not a de Polignac number, because 137969713 - 2¹⁷ = 137838641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137969719) 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, 9854973 + ... + 9854986.

It is an arithmetic number, because the mean of its divisors is an integer number (39419920).

Almost surely, 2^137969713 is an apocalyptic number.

It is an amenable number.

137969713 is a deficient number, since it is larger than the sum of its proper divisors (19709967).

137969713 is an equidigital number, since it uses as much as digits as its factorization.

137969713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19709966.

The product of its digits is 214326, while the sum is 46.

The square root of 137969713 is about 11746.0509534056. The cubic root of 137969713 is about 516.7271174962.

The spelling of 137969713 in words is "one hundred thirty-seven million, nine hundred sixty-nine thousand, seven hundred thirteen".