1392445930 has 16 divisors (see below), whose sum is σ = 2507028264. Its totient is φ = 556839360.

The previous prime is 1392445883. The next prime is 1392445937. The reversal of 1392445930 is 395442931.

It can be written as a sum of positive squares in 4 ways, for example, as 912704521 + 479741409 = 30211^2 + 21903^2 .

It is not an unprimeable number, because it can be changed into a prime (1392445937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31144 + ... + 61276.

Almost surely, 2^1392445930 is an apocalyptic number.

1392445930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1392445930 is a deficient number, since it is larger than the sum of its proper divisors (1114582334).

1392445930 is a wasteful number, since it uses less digits than its factorization.

1392445930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34761.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 1392445930 is about 37315.4918231021. The cubic root of 1392445930 is about 1116.6732517124.

Subtracting from 1392445930 its reverse (395442931), we obtain a cube (997002999 = 999³).

The spelling of 1392445930 in words is "one billion, three hundred ninety-two million, four hundred forty-five thousand, nine hundred thirty".