139049263391 has 2 divisors, whose sum is σ = 139049263392. Its totient is φ = 139049263390.

The previous prime is 139049263387. The next prime is 139049263411. The reversal of 139049263391 is 193362940931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139049263391 - 2² = 139049263387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139049263321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69524631695 + 69524631696.

It is an arithmetic number, because the mean of its divisors is an integer number (69524631696).

Almost surely, 2^139049263391 is an apocalyptic number.

139049263391 is a deficient number, since it is larger than the sum of its proper divisors (1).

139049263391 is an equidigital number, since it uses as much as digits as its factorization.

139049263391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 50.

The spelling of 139049263391 in words is "one hundred thirty-nine billion, forty-nine million, two hundred sixty-three thousand, three hundred ninety-one".