390868211 has 8 divisors (see below), whose sum is σ = 404293344. Its totient is φ = 377628480.

The previous prime is 390868201. The next prime is 390868229. The reversal of 390868211 is 112868093.

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

It is a cyclic number.

It is not a de Polignac number, because 390868211 - 2¹⁸ = 390606067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390868201) 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, 42056 + ... + 50501.

It is an arithmetic number, because the mean of its divisors is an integer number (50536668).

Almost surely, 2^390868211 is an apocalyptic number.

390868211 is a deficient number, since it is larger than the sum of its proper divisors (13425133).

390868211 is a wasteful number, since it uses less digits than its factorization.

390868211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92701.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 390868211 is about 19770.3872243312. The cubic root of 390868211 is about 731.1561157770.

The spelling of 390868211 in words is "three hundred ninety million, eight hundred sixty-eight thousand, two hundred eleven".