137894969 has 2 divisors, whose sum is σ = 137894970. Its totient is φ = 137894968.

The previous prime is 137894929. The next prime is 137895011. The reversal of 137894969 is 969498731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135373225 + 2521744 = 11635^2 + 1588^2 .

It is a cyclic number.

It is not a de Polignac number, because 137894969 - 2¹² = 137890873 is a prime.

It is a super-2 number, since 2×137894969² = 38030044951021922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137894929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68947484 + 68947485.

It is an arithmetic number, because the mean of its divisors is an integer number (68947485).

Almost surely, 2^137894969 is an apocalyptic number.

It is an amenable number.

137894969 is a deficient number, since it is larger than the sum of its proper divisors (1).

137894969 is an equidigital number, since it uses as much as digits as its factorization.

137894969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 56.

The square root of 137894969 is about 11742.8688573108. The cubic root of 137894969 is about 516.6337896989.

The spelling of 137894969 in words is "one hundred thirty-seven million, eight hundred ninety-four thousand, nine hundred sixty-nine".