1349400390679 has 16 divisors (see below), whose sum is σ = 1481785953696. Its totient is φ = 1218637180800.

The previous prime is 1349400390661. The next prime is 1349400390683. The reversal of 1349400390679 is 9760930049431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1349400390679 - 2⁵ = 1349400390647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349400390379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7714369 + ... + 7887349.

It is an arithmetic number, because the mean of its divisors is an integer number (92611622106).

Almost surely, 2^{1349400390679} is an apocalyptic number.

1349400390679 is a deficient number, since it is larger than the sum of its proper divisors (132385563017).

1349400390679 is a wasteful number, since it uses less digits than its factorization.

1349400390679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177666.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 1349400390679 in words is "one trillion, three hundred forty-nine billion, four hundred million, three hundred ninety thousand, six hundred seventy-nine".