1393445223 has 6 divisors (see below), whose sum is σ = 2012754224. Its totient is φ = 928963476.

The previous prime is 1393445201. The next prime is 1393445227. The reversal of 1393445223 is 3225443931.

1393445223 is a `hidden beast` number, since 1 + 3 + 93 + 44 + 522 + 3 = 666.

It is not a de Polignac number, because 1393445223 - 2³⁰ = 319703399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393445227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77413615 + ... + 77413632.

Almost surely, 2^1393445223 is an apocalyptic number.

1393445223 is a deficient number, since it is larger than the sum of its proper divisors (619309001).

1393445223 is a wasteful number, since it uses less digits than its factorization.

1393445223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154827253 (or 154827250 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 1393445223 is about 37328.8792089985. The cubic root of 1393445223 is about 1116.9403158061.

The spelling of 1393445223 in words is "one billion, three hundred ninety-three million, four hundred forty-five thousand, two hundred twenty-three".