1392049445 has 32 divisors (see below), whose sum is σ = 1758348000. Its totient is φ = 1056563200.

The previous prime is 1392049433. The next prime is 1392049487. The reversal of 1392049445 is 5449402931.

It can be written as a sum of positive squares in 16 ways, for example, as 365039236 + 1027010209 = 19106^2 + 32047^2 .

It is not a de Polignac number, because 1392049445 - 2⁸ = 1392049189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3471245 + ... + 3471645.

It is an arithmetic number, because the mean of its divisors is an integer number (54948375).

Almost surely, 2^1392049445 is an apocalyptic number.

It is an amenable number.

1392049445 is a deficient number, since it is larger than the sum of its proper divisors (366298555).

1392049445 is a wasteful number, since it uses less digits than its factorization.

1392049445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1392049445 is about 37310.1788390246. The cubic root of 1392049445 is about 1116.5672544851.

The spelling of 1392049445 in words is "one billion, three hundred ninety-two million, forty-nine thousand, four hundred forty-five".