1399363311 has 4 divisors (see below), whose sum is σ = 1865817752. Its totient is φ = 932908872.

The previous prime is 1399363267. The next prime is 1399363321. The reversal of 1399363311 is 1133639931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1133639931 = 3 ⋅377879977.

It is not a de Polignac number, because 1399363311 - 2⁶ = 1399363247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399363311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399363321) 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, 233227216 + ... + 233227221.

It is an arithmetic number, because the mean of its divisors is an integer number (466454438).

Almost surely, 2^1399363311 is an apocalyptic number.

1399363311 is a deficient number, since it is larger than the sum of its proper divisors (466454441).

1399363311 is an equidigital number, since it uses as much as digits as its factorization.

1399363311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466454440.

The product of its digits is 39366, while the sum is 39.

The square root of 1399363311 is about 37408.0647855513. The cubic root of 1399363311 is about 1118.5193313804.

The spelling of 1399363311 in words is "one billion, three hundred ninety-nine million, three hundred sixty-three thousand, three hundred eleven".