1392098399 has 4 divisors (see below), whose sum is σ = 1393909440. Its totient is φ = 1390287360.

The previous prime is 1392098353. The next prime is 1392098401. The reversal of 1392098399 is 9938902931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1392098399 - 2¹² = 1392094303 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 1392098399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392038399) 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, 904367 + ... + 905904.

It is an arithmetic number, because the mean of its divisors is an integer number (348477360).

Almost surely, 2^1392098399 is an apocalyptic number.

1392098399 is a deficient number, since it is larger than the sum of its proper divisors (1811041).

1392098399 is an equidigital number, since it uses as much as digits as its factorization.

1392098399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811040.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 1392098399 is about 37310.8348740684. The cubic root of 1392098399 is about 1116.5803430510.

The spelling of 1392098399 in words is "one billion, three hundred ninety-two million, ninety-eight thousand, three hundred ninety-nine".