1399023377 has 2 divisors, whose sum is σ = 1399023378. Its totient is φ = 1399023376.

The previous prime is 1399023343. The next prime is 1399023407. The reversal of 1399023377 is 7733209931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334879296 + 64144081 = 36536^2 + 8009^2 .

It is a cyclic number.

It is not a de Polignac number, because 1399023377 - 2¹⁶ = 1398957841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1399025377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699511688 + 699511689.

It is an arithmetic number, because the mean of its divisors is an integer number (699511689).

Almost surely, 2^1399023377 is an apocalyptic number.

It is an amenable number.

1399023377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399023377 is an equidigital number, since it uses as much as digits as its factorization.

1399023377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 1399023377 is about 37403.5209171543. The cubic root of 1399023377 is about 1118.4287536299.

The spelling of 1399023377 in words is "one billion, three hundred ninety-nine million, twenty-three thousand, three hundred seventy-seven".