1390856479499 has 2 divisors, whose sum is σ = 1390856479500. Its totient is φ = 1390856479498.

The previous prime is 1390856479487. The next prime is 1390856479517. The reversal of 1390856479499 is 9949746580931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390856479499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1390856479429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695428239749 + 695428239750.

It is an arithmetic number, because the mean of its divisors is an integer number (695428239750).

Almost surely, 2^{1390856479499} is an apocalyptic number.

1390856479499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390856479499 is an equidigital number, since it uses as much as digits as its factorization.

1390856479499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529079040, while the sum is 74.

The spelling of 1390856479499 in words is "one trillion, three hundred ninety billion, eight hundred fifty-six million, four hundred seventy-nine thousand, four hundred ninety-nine".