1392928850 has 12 divisors (see below), whose sum is σ = 2590847754. Its totient is φ = 557171520.

The previous prime is 1392928819. The next prime is 1392928883. The reversal of 1392928850 is 588292931.

It can be written as a sum of positive squares in 3 ways, for example, as 645617281 + 747311569 = 25409^2 + 27337^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1392928795 and 1392928804.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13929239 + ... + 13929338.

Almost surely, 2^1392928850 is an apocalyptic number.

1392928850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1392928850 is a deficient number, since it is larger than the sum of its proper divisors (1197918904).

1392928850 is a wasteful number, since it uses less digits than its factorization.

1392928850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27858589 (or 27858584 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 1392928850 is about 37321.9620330979. The cubic root of 1392928850 is about 1116.8023294993.

The spelling of 1392928850 in words is "one billion, three hundred ninety-two million, nine hundred twenty-eight thousand, eight hundred fifty".