139675769 has 2 divisors, whose sum is σ = 139675770. Its totient is φ = 139675768.

The previous prime is 139675759. The next prime is 139675793. The reversal of 139675769 is 967576931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112635769 + 27040000 = 10613^2 + 5200^2 .

It is a cyclic number.

It is not a de Polignac number, because 139675769 - 2²⁰ = 138627193 is a prime.

It is a super-2 number, since 2×139675769² = 39018640891482722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139675769.

It is not a weakly prime, because it can be changed into another prime (139675759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69837884 + 69837885.

It is an arithmetic number, because the mean of its divisors is an integer number (69837885).

Almost surely, 2^139675769 is an apocalyptic number.

It is an amenable number.

139675769 is a deficient number, since it is larger than the sum of its proper divisors (1).

139675769 is an equidigital number, since it uses as much as digits as its factorization.

139675769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 53.

The square root of 139675769 is about 11818.4503637321. The cubic root of 139675769 is about 518.8482509213.

The spelling of 139675769 in words is "one hundred thirty-nine million, six hundred seventy-five thousand, seven hundred sixty-nine".