139670987399 has 2 divisors, whose sum is σ = 139670987400. Its totient is φ = 139670987398.

The previous prime is 139670987383. The next prime is 139670987441. The reversal of 139670987399 is 993789076931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139670987399 - 2⁴ = 139670987383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139670983399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69835493699 + 69835493700.

It is an arithmetic number, because the mean of its divisors is an integer number (69835493700).

Almost surely, 2^139670987399 is an apocalyptic number.

139670987399 is a deficient number, since it is larger than the sum of its proper divisors (1).

139670987399 is an equidigital number, since it uses as much as digits as its factorization.

139670987399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138883248, while the sum is 71.

The spelling of 139670987399 in words is "one hundred thirty-nine billion, six hundred seventy million, nine hundred eighty-seven thousand, three hundred ninety-nine".