1392689899 has 2 divisors, whose sum is σ = 1392689900. Its totient is φ = 1392689898.

The previous prime is 1392689777. The next prime is 1392689923. The reversal of 1392689899 is 9989862931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1392689899 - 2⁹ = 1392689387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1392689899.

It is not a weakly prime, because it can be changed into another prime (1392689299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696344949 + 696344950.

It is an arithmetic number, because the mean of its divisors is an integer number (696344950).

Almost surely, 2^1392689899 is an apocalyptic number.

1392689899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392689899 is an equidigital number, since it uses as much as digits as its factorization.

1392689899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 64.

The square root of 1392689899 is about 37318.7606841385. The cubic root of 1392689899 is about 1116.7384649560.

The spelling of 1392689899 in words is "one billion, three hundred ninety-two million, six hundred eighty-nine thousand, eight hundred ninety-nine".