137888999 has 2 divisors, whose sum is σ = 137889000. Its totient is φ = 137888998.

The previous prime is 137888983. The next prime is 137889013. The reversal of 137888999 is 999888731.

It is a strong prime.

It is an emirp because it is prime and its reverse (999888731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137888999 - 2⁴ = 137888983 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137888969) 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, 68944499 + 68944500.

It is an arithmetic number, because the mean of its divisors is an integer number (68944500).

Almost surely, 2^137888999 is an apocalyptic number.

137888999 is a deficient number, since it is larger than the sum of its proper divisors (1).

137888999 is an equidigital number, since it uses as much as digits as its factorization.

137888999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 62.

The square root of 137888999 is about 11742.6146577327. The cubic root of 137888999 is about 516.6263339079.

The spelling of 137888999 in words is "one hundred thirty-seven million, eight hundred eighty-eight thousand, nine hundred ninety-nine".