394484431 has 8 divisors (see below), whose sum is σ = 449057664. Its totient is φ = 343029720.

The previous prime is 394484429. The next prime is 394484471. The reversal of 394484431 is 134484493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 394484431 - 2¹ = 394484429 is a prime.

It is a super-2 number, since 2×394484431² = 311235932602787522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394484471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779361 + ... + 779866.

It is an arithmetic number, because the mean of its divisors is an integer number (56132208).

Almost surely, 2^394484431 is an apocalyptic number.

394484431 is a deficient number, since it is larger than the sum of its proper divisors (54573233).

394484431 is a wasteful number, since it uses less digits than its factorization.

394484431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559261.

The product of its digits is 165888, while the sum is 40.

The square root of 394484431 is about 19861.6321333369. The cubic root of 394484431 is about 733.4040252559.

The spelling of 394484431 in words is "three hundred ninety-four million, four hundred eighty-four thousand, four hundred thirty-one".