1390330679 has 4 divisors (see below), whose sum is σ = 1395740784. Its totient is φ = 1384920576.

The previous prime is 1390330649. The next prime is 1390330691. The reversal of 1390330679 is 9760330931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9760330931 = 13 ⋅750794687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390330679 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 (1390330619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704667 + ... + 2705180.

It is an arithmetic number, because the mean of its divisors is an integer number (348935196).

Almost surely, 2^1390330679 is an apocalyptic number.

1390330679 is a deficient number, since it is larger than the sum of its proper divisors (5410105).

1390330679 is an equidigital number, since it uses as much as digits as its factorization.

1390330679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410104.

The product of its (nonzero) digits is 91854, while the sum is 41.

The square root of 1390330679 is about 37287.1382516814. The cubic root of 1390330679 is about 1116.1075226777.

The spelling of 1390330679 in words is "one billion, three hundred ninety million, three hundred thirty thousand, six hundred seventy-nine".