393690343 has 8 divisors (see below), whose sum is σ = 401844240. Its totient is φ = 385619520.

The previous prime is 393690337. The next prime is 393690361. The reversal of 393690343 is 343096393.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393690343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 393690296 and 393690305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393690373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11148 + ... + 30193.

It is an arithmetic number, because the mean of its divisors is an integer number (50230530).

Almost surely, 2^393690343 is an apocalyptic number.

393690343 is a deficient number, since it is larger than the sum of its proper divisors (8153897).

393690343 is a wasteful number, since it uses less digits than its factorization.

393690343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41537.

The product of its (nonzero) digits is 157464, while the sum is 40.

The square root of 393690343 is about 19841.6315609377. The cubic root of 393690343 is about 732.9115862606.

The spelling of 393690343 in words is "three hundred ninety-three million, six hundred ninety thousand, three hundred forty-three".