394334641 has 8 divisors (see below), whose sum is σ = 408712040. Its totient is φ = 380153088.

The previous prime is 394334623. The next prime is 394334651. The reversal of 394334641 is 146433493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 122744241 + 271590400 = 11079^2 + 16480^2 .

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 394334641 - 2⁷ = 394334513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394334641.

It is not an unprimeable number, because it can be changed into a prime (394334621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44856 + ... + 52921.

It is an arithmetic number, because the mean of its divisors is an integer number (51089005).

Almost surely, 2^394334641 is an apocalyptic number.

It is an amenable number.

394334641 is a deficient number, since it is larger than the sum of its proper divisors (14377399).

394334641 is a wasteful number, since it uses less digits than its factorization.

394334641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97923.

The product of its digits is 93312, while the sum is 37.

The square root of 394334641 is about 19857.8609371704. The cubic root of 394334641 is about 733.3111863605.

The spelling of 394334641 in words is "three hundred ninety-four million, three hundred thirty-four thousand, six hundred forty-one".