394022984 has 8 divisors (see below), whose sum is σ = 738793110. Its totient is φ = 197011488.

The previous prime is 394022983. The next prime is 394022999. The reversal of 394022984 is 489220493.

It can be written as a sum of positive squares in only one way, i.e., 394022500 + 484 = 19850^2 + 22^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×394022984² = 310508223840528512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394022983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24626429 + ... + 24626444.

Almost surely, 2^394022984 is an apocalyptic number.

It is an amenable number.

394022984 is a deficient number, since it is larger than the sum of its proper divisors (344770126).

394022984 is a wasteful number, since it uses less digits than its factorization.

394022984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49252879 (or 49252875 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 394022984 is about 19850.0121914320. The cubic root of 394022984 is about 733.1179479489.

The spelling of 394022984 in words is "three hundred ninety-four million, twenty-two thousand, nine hundred eighty-four".