137984569 has 2 divisors, whose sum is σ = 137984570. Its totient is φ = 137984568.

The previous prime is 137984551. The next prime is 137984573. The reversal of 137984569 is 965489731.

It is a happy number.

137984569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 7225344 = 11435^2 + 2688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137984569 is a prime.

It is a super-2 number, since 2×137984569² = 38079482564231522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137984519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68992284 + 68992285.

It is an arithmetic number, because the mean of its divisors is an integer number (68992285).

Almost surely, 2^137984569 is an apocalyptic number.

It is an amenable number.

137984569 is a deficient number, since it is larger than the sum of its proper divisors (1).

137984569 is an equidigital number, since it uses as much as digits as its factorization.

137984569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 137984569 is about 11746.6833191331. The cubic root of 137984569 is about 516.7456631668.

The spelling of 137984569 in words is "one hundred thirty-seven million, nine hundred eighty-four thousand, five hundred sixty-nine".