139407062969 has 2 divisors, whose sum is σ = 139407062970. Its totient is φ = 139407062968.

The previous prime is 139407062959. The next prime is 139407063053. The reversal of 139407062969 is 969260704931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138690697744 + 716365225 = 372412^2 + 26765^2 .

It is a cyclic number.

It is not a de Polignac number, because 139407062969 - 2²⁴ = 139390285753 is a prime.

It is a super-2 number, since 2×139407062969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139407062959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69703531484 + 69703531485.

It is an arithmetic number, because the mean of its divisors is an integer number (69703531485).

Almost surely, 2^139407062969 is an apocalyptic number.

It is an amenable number.

139407062969 is a deficient number, since it is larger than the sum of its proper divisors (1).

139407062969 is an equidigital number, since it uses as much as digits as its factorization.

139407062969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 139407062969 in words is "one hundred thirty-nine billion, four hundred seven million, sixty-two thousand, nine hundred sixty-nine".