394881742 has 8 divisors (see below), whose sum is σ = 606769632. Its totient is φ = 192625200.

The previous prime is 394881679. The next prime is 394881757. The reversal of 394881742 is 247188493.

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

It is a junction number, because it is equal to n+sod(n) for n = 394881692 and 394881701.

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, 2407734 + ... + 2407897.

It is an arithmetic number, because the mean of its divisors is an integer number (75846204).

Almost surely, 2^394881742 is an apocalyptic number.

394881742 is a deficient number, since it is larger than the sum of its proper divisors (211887890).

394881742 is a wasteful number, since it uses less digits than its factorization.

394881742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815674.

The product of its digits is 387072, while the sum is 46.

The square root of 394881742 is about 19871.6315887750. The cubic root of 394881742 is about 733.6501623171.

The spelling of 394881742 in words is "three hundred ninety-four million, eight hundred eighty-one thousand, seven hundred forty-two".