1399364827 has 32 divisors (see below), whose sum is σ = 1742459904. Its totient is φ = 1097712000.

The previous prime is 1399364821. The next prime is 1399364833. The reversal of 1399364827 is 7284639931.

It is an interprime number because it is at equal distance from previous prime (1399364821) and next prime (1399364833).

It is not a de Polignac number, because 1399364827 - 2²⁷ = 1265147099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1399364821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361452 + ... + 365302.

It is an arithmetic number, because the mean of its divisors is an integer number (54451872).

Almost surely, 2^1399364827 is an apocalyptic number.

1399364827 is a deficient number, since it is larger than the sum of its proper divisors (343095077).

1399364827 is a wasteful number, since it uses less digits than its factorization.

1399364827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979.

The product of its digits is 1959552, while the sum is 52.

The square root of 1399364827 is about 37408.0850485560. The cubic root of 1399364827 is about 1118.5197352962.

The spelling of 1399364827 in words is "one billion, three hundred ninety-nine million, three hundred sixty-four thousand, eight hundred twenty-seven".