16397793 has 12 divisors (see below), whose sum is σ = 23986560. Its totient is φ = 10793016.

The previous prime is 16397767. The next prime is 16397803. The reversal of 16397793 is 39779361.

16397793 is a `hidden beast` number, since 1 + 639 + 7 + 7 + 9 + 3 = 666.

It is not a de Polignac number, because 16397793 - 2⁵ = 16397761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16397713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10821 + ... + 12242.

It is an arithmetic number, because the mean of its divisors is an integer number (1998880).

Almost surely, 2^16397793 is an apocalyptic number.

It is an amenable number.

16397793 is a deficient number, since it is larger than the sum of its proper divisors (7588767).

16397793 is a wasteful number, since it uses less digits than its factorization.

16397793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23148 (or 23145 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 16397793 is about 4049.4188471928. The cubic root of 16397793 is about 254.0554211841.

The spelling of 16397793 in words is "sixteen million, three hundred ninety-seven thousand, seven hundred ninety-three".