139153697 has 2 divisors, whose sum is σ = 139153698. Its totient is φ = 139153696.

The previous prime is 139153667. The next prime is 139153709. The reversal of 139153697 is 796351931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101687056 + 37466641 = 10084^2 + 6121^2 .

It is a cyclic number.

It is not a de Polignac number, because 139153697 - 2¹⁶ = 139088161 is a prime.

It is not a weakly prime, because it can be changed into another prime (139153667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69576848 + 69576849.

It is an arithmetic number, because the mean of its divisors is an integer number (69576849).

Almost surely, 2^139153697 is an apocalyptic number.

It is an amenable number.

139153697 is a deficient number, since it is larger than the sum of its proper divisors (1).

139153697 is an equidigital number, since it uses as much as digits as its factorization.

139153697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 44.

The square root of 139153697 is about 11796.3425263935. The cubic root of 139153697 is about 518.2010035213.

The spelling of 139153697 in words is "one hundred thirty-nine million, one hundred fifty-three thousand, six hundred ninety-seven".