390408193 has 8 divisors (see below), whose sum is σ = 447770880. Its totient is φ = 333443040.

The previous prime is 390408169. The next prime is 390408199. The reversal of 390408193 is 391804093.

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

It is a de Polignac number, because none of the positive numbers 2^k-390408193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390408199) 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, 97273 + ... + 101206.

It is an arithmetic number, because the mean of its divisors is an integer number (55971360).

Almost surely, 2^390408193 is an apocalyptic number.

It is an amenable number.

390408193 is a deficient number, since it is larger than the sum of its proper divisors (57362687).

390408193 is a wasteful number, since it uses less digits than its factorization.

390408193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198767.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 390408193 is about 19758.7497833238. The cubic root of 390408193 is about 730.8691673883.

The spelling of 390408193 in words is "three hundred ninety million, four hundred eight thousand, one hundred ninety-three".