138848797 has 2 divisors, whose sum is σ = 138848798. Its totient is φ = 138848796.

The previous prime is 138848737. The next prime is 138848803. The reversal of 138848797 is 797848831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71132356 + 67716441 = 8434^2 + 8229^2 .

It is a cyclic number.

It is not a de Polignac number, because 138848797 - 2¹¹ = 138846749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138848737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69424398 + 69424399.

It is an arithmetic number, because the mean of its divisors is an integer number (69424399).

Almost surely, 2^138848797 is an apocalyptic number.

It is an amenable number.

138848797 is a deficient number, since it is larger than the sum of its proper divisors (1).

138848797 is an equidigital number, since it uses as much as digits as its factorization.

138848797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 55.

The square root of 138848797 is about 11783.4119422178. The cubic root of 138848797 is about 517.8222496021.

The spelling of 138848797 in words is "one hundred thirty-eight million, eight hundred forty-eight thousand, seven hundred ninety-seven".