1392225841 has 4 divisors (see below), whose sum is σ = 1437136384. Its totient is φ = 1347315300.

The previous prime is 1392225833. The next prime is 1392225847. The reversal of 1392225841 is 1485222931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1392225841 - 2³ = 1392225833 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 1392225841.

It is not an unprimeable number, because it can be changed into a prime (1392225847) 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, 22455225 + ... + 22455286.

It is an arithmetic number, because the mean of its divisors is an integer number (359284096).

Almost surely, 2^1392225841 is an apocalyptic number.

It is an amenable number.

1392225841 is a deficient number, since it is larger than the sum of its proper divisors (44910543).

1392225841 is an equidigital number, since it uses as much as digits as its factorization.

1392225841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44910542.

The product of its digits is 34560, while the sum is 37.

The square root of 1392225841 is about 37312.5426766925. The cubic root of 1392225841 is about 1116.6144150893.

The spelling of 1392225841 in words is "one billion, three hundred ninety-two million, two hundred twenty-five thousand, eight hundred forty-one".