138572699 has 2 divisors, whose sum is σ = 138572700. Its totient is φ = 138572698.

The previous prime is 138572689. The next prime is 138572711. The reversal of 138572699 is 996275831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138572699 - 2¹² = 138568603 is a prime.

It is a Sophie Germain prime.

It is equal to p_7835999 and since 138572699 and 7835999 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (138572639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69286349 + 69286350.

It is an arithmetic number, because the mean of its divisors is an integer number (69286350).

Almost surely, 2^138572699 is an apocalyptic number.

138572699 is a deficient number, since it is larger than the sum of its proper divisors (1).

138572699 is an equidigital number, since it uses as much as digits as its factorization.

138572699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 50.

The square root of 138572699 is about 11771.6905752742. The cubic root of 138572699 is about 517.4787955247.

The spelling of 138572699 in words is "one hundred thirty-eight million, five hundred seventy-two thousand, six hundred ninety-nine".