1395139725839 has 2 divisors, whose sum is σ = 1395139725840. Its totient is φ = 1395139725838.

The previous prime is 1395139725823. The next prime is 1395139725853. The reversal of 1395139725839 is 9385279315931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1395139725839 - 2⁴ = 1395139725823 is a prime.

It is a super-2 number, since 2×1395139725839² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395139725869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697569862919 + 697569862920.

It is an arithmetic number, because the mean of its divisors is an integer number (697569862920).

Almost surely, 2^{1395139725839} is an apocalyptic number.

1395139725839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395139725839 is an equidigital number, since it uses as much as digits as its factorization.

1395139725839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55112400, while the sum is 65.

The spelling of 1395139725839 in words is "one trillion, three hundred ninety-five billion, one hundred thirty-nine million, seven hundred twenty-five thousand, eight hundred thirty-nine".