394770429 has 40 divisors (see below), whose sum is σ = 624360000. Its totient is φ = 247883328.

The previous prime is 394770421. The next prime is 394770443. The reversal of 394770429 is 924077493.

It is not a de Polignac number, because 394770429 - 2³ = 394770421 is a prime.

It is a super-2 number, since 2×394770429² = 311687383225688082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394770421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 305617 + ... + 306905.

It is an arithmetic number, because the mean of its divisors is an integer number (15609000).

Almost surely, 2^394770429 is an apocalyptic number.

It is an amenable number.

394770429 is a deficient number, since it is larger than the sum of its proper divisors (229589571).

394770429 is a wasteful number, since it uses less digits than its factorization.

394770429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 394770429 is about 19868.8305896447. The cubic root of 394770429 is about 733.5812197566.

The spelling of 394770429 in words is "three hundred ninety-four million, seven hundred seventy thousand, four hundred twenty-nine".