1393604772 has 48 divisors (see below), whose sum is σ = 3718280832. Its totient is φ = 397958400.

The previous prime is 1393604749. The next prime is 1393604789. The reversal of 1393604772 is 2774063931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218022 + ... + 224322.

It is an arithmetic number, because the mean of its divisors is an integer number (77464184).

Almost surely, 2^1393604772 is an apocalyptic number.

1393604772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1393604772 is an abundant number, since it is smaller than the sum of its proper divisors (2324676060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1393604772 is a wasteful number, since it uses less digits than its factorization.

1393604772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8948 (or 8946 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 1393604772 is about 37331.0162197602. The cubic root of 1393604772 is about 1116.9829439401.

The spelling of 1393604772 in words is "one billion, three hundred ninety-three million, six hundred four thousand, seven hundred seventy-two".