393516946 has 8 divisors (see below), whose sum is σ = 590617404. Its totient is φ = 196644480.

The previous prime is 393516943. The next prime is 393516953. The reversal of 393516946 is 649615393.

It can be written as a sum of positive squares in 2 ways, for example, as 391446225 + 2070721 = 19785^2 + 1439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 393516896 and 393516905.

It is not an unprimeable number, because it can be changed into a prime (393516943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52615 + ... + 59626.

Almost surely, 2^393516946 is an apocalyptic number.

393516946 is a deficient number, since it is larger than the sum of its proper divisors (197100458).

393516946 is a wasteful number, since it uses less digits than its factorization.

393516946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113996.

The product of its digits is 524880, while the sum is 46.

The square root of 393516946 is about 19837.2615549627. The cubic root of 393516946 is about 732.8039692507.

The spelling of 393516946 in words is "three hundred ninety-three million, five hundred sixteen thousand, nine hundred forty-six".