394530444 has 72 divisors (see below), whose sum is σ = 1243377408. Its totient is φ = 102474720.

The previous prime is 394530443. The next prime is 394530449. The reversal of 394530444 is 444035493.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 394530399 and 394530408.

It is not an unprimeable number, because it can be changed into a prime (394530443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68392 + ... + 73935.

Almost surely, 2^394530444 is an apocalyptic number.

It is an amenable number.

394530444 is an abundant number, since it is smaller than the sum of its proper divisors (848846964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394530444 is a wasteful number, since it uses less digits than its factorization.

394530444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142355 (or 142350 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 394530444 is about 19862.7904384052. The cubic root of 394530444 is about 733.4325391040.

The spelling of 394530444 in words is "three hundred ninety-four million, five hundred thirty thousand, four hundred forty-four".