1392405401 has 2 divisors, whose sum is σ = 1392405402. Its totient is φ = 1392405400.

The previous prime is 1392405359. The next prime is 1392405439. The reversal of 1392405401 is 1045042931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368630025 + 23775376 = 36995^2 + 4876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392405401 - 2²⁶ = 1325296537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392405491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696202700 + 696202701.

It is an arithmetic number, because the mean of its divisors is an integer number (696202701).

Almost surely, 2^1392405401 is an apocalyptic number.

It is an amenable number.

1392405401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392405401 is an equidigital number, since it uses as much as digits as its factorization.

1392405401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1392405401 is about 37314.9487605169. The cubic root of 1392405401 is about 1116.6624175181.

The spelling of 1392405401 in words is "one billion, three hundred ninety-two million, four hundred five thousand, four hundred one".