394551412 has 12 divisors (see below), whose sum is σ = 694457316. Its totient is φ = 196135040.

The previous prime is 394551389. The next prime is 394551431. The reversal of 394551412 is 214155493.

It can be written as a sum of positive squares in 2 ways, for example, as 207244816 + 187306596 = 14396^2 + 13686^2 .

It is a super-2 number, since 2×394551412² = 311341633422387488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284389 + ... + 285772.

It is an arithmetic number, because the mean of its divisors is an integer number (57871443).

Almost surely, 2^394551412 is an apocalyptic number.

It is an amenable number.

394551412 is a deficient number, since it is larger than the sum of its proper divisors (299905904).

394551412 is a wasteful number, since it uses less digits than its factorization.

394551412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570338 (or 570336 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 394551412 is about 19863.3182524975. The cubic root of 394551412 is about 733.4455320524.

The spelling of 394551412 in words is "three hundred ninety-four million, five hundred fifty-one thousand, four hundred twelve".