138884597 has 2 divisors, whose sum is σ = 138884598. Its totient is φ = 138884596.

The previous prime is 138884593. The next prime is 138884657. The reversal of 138884597 is 795488831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82919236 + 55965361 = 9106^2 + 7481^2 .

It is a cyclic number.

It is not a de Polignac number, because 138884597 - 2² = 138884593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138884593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69442298 + 69442299.

It is an arithmetic number, because the mean of its divisors is an integer number (69442299).

Almost surely, 2^138884597 is an apocalyptic number.

It is an amenable number.

138884597 is a deficient number, since it is larger than the sum of its proper divisors (1).

138884597 is an equidigital number, since it uses as much as digits as its factorization.

138884597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 53.

The square root of 138884597 is about 11784.9309289448. The cubic root of 138884597 is about 517.8667499120.

The spelling of 138884597 in words is "one hundred thirty-eight million, eight hundred eighty-four thousand, five hundred ninety-seven".