139097759 has 2 divisors, whose sum is σ = 139097760. Its totient is φ = 139097758.

The previous prime is 139097737. The next prime is 139097779. The reversal of 139097759 is 957790931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139097759 - 2¹² = 139093663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139097719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69548879 + 69548880.

It is an arithmetic number, because the mean of its divisors is an integer number (69548880).

Almost surely, 2^139097759 is an apocalyptic number.

139097759 is a deficient number, since it is larger than the sum of its proper divisors (1).

139097759 is an equidigital number, since it uses as much as digits as its factorization.

139097759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 535815, while the sum is 50.

The square root of 139097759 is about 11793.9712989307. The cubic root of 139097759 is about 518.1315574977.

The spelling of 139097759 in words is "one hundred thirty-nine million, ninety-seven thousand, seven hundred fifty-nine".