394852921 has 8 divisors (see below), whose sum is σ = 407980544. Its totient is φ = 381749760.

The previous prime is 394852907. The next prime is 394852933. The reversal of 394852921 is 129258493.

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 394852921 - 2¹¹ = 394850873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394852901) 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, 30220 + ... + 41266.

It is an arithmetic number, because the mean of its divisors is an integer number (50997568).

Almost surely, 2^394852921 is an apocalyptic number.

394852921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

394852921 is a deficient number, since it is larger than the sum of its proper divisors (13127623).

394852921 is a wasteful number, since it uses less digits than its factorization.

394852921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12231.

The product of its digits is 155520, while the sum is 43.

The square root of 394852921 is about 19870.9063960354. The cubic root of 394852921 is about 733.6323130528.

The spelling of 394852921 in words is "three hundred ninety-four million, eight hundred fifty-two thousand, nine hundred twenty-one".