394474851 has 12 divisors (see below), whose sum is σ = 603314712. Its totient is φ = 247513536.

The previous prime is 394474841. The next prime is 394474891. The reversal of 394474851 is 158474493.

It is not a de Polignac number, because 394474851 - 2²³ = 386086243 is a prime.

It is a super-2 number, since 2×394474851² = 311220816142944402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 394474797 and 394474806.

It is not an unprimeable number, because it can be changed into a prime (394474811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1288981 + ... + 1289286.

It is an arithmetic number, because the mean of its divisors is an integer number (50276226).

Almost surely, 2^394474851 is an apocalyptic number.

394474851 is a deficient number, since it is larger than the sum of its proper divisors (208839861).

394474851 is a wasteful number, since it uses less digits than its factorization.

394474851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578290 (or 2578287 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 394474851 is about 19861.3909633741. The cubic root of 394474851 is about 733.3980883360.

The spelling of 394474851 in words is "three hundred ninety-four million, four hundred seventy-four thousand, eight hundred fifty-one".