394429771 has 8 divisors (see below), whose sum is σ = 407384064. Its totient is φ = 381489960.

The previous prime is 394429757. The next prime is 394429787. The reversal of 394429771 is 177924493.

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

It is a cyclic number.

It is not a de Polignac number, because 394429771 - 2⁷ = 394429643 is a prime.

It is a super-2 number, since 2×394429771² = 311149688502224882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394429271) 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 in 7 ways as a sum of consecutive naturals, for example, 93510 + ... + 97636.

It is an arithmetic number, because the mean of its divisors is an integer number (50923008).

Almost surely, 2^394429771 is an apocalyptic number.

394429771 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

394429771 is a deficient number, since it is larger than the sum of its proper divisors (12954293).

394429771 is a wasteful number, since it uses less digits than its factorization.

394429771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241.

The product of its digits is 381024, while the sum is 46.

The square root of 394429771 is about 19860.2560658215. The cubic root of 394429771 is about 733.3701500570.

The spelling of 394429771 in words is "three hundred ninety-four million, four hundred twenty-nine thousand, seven hundred seventy-one".