394832641 has 6 divisors (see below), whose sum is σ = 459295170. Its totient is φ = 338427936.

The previous prime is 394832639. The next prime is 394832653. The reversal of 394832641 is 146238493.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 207936400 + 186896241 = 14420^2 + 13671^2 .

It is not a de Polignac number, because 394832641 - 2¹ = 394832639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394832594 and 394832603.

It is not an unprimeable number, because it can be changed into a prime (394832611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4028856 + ... + 4028953.

It is an arithmetic number, because the mean of its divisors is an integer number (76549195).

Almost surely, 2^394832641 is an apocalyptic number.

It is an amenable number.

394832641 is a deficient number, since it is larger than the sum of its proper divisors (64462529).

394832641 is an equidigital number, since it uses as much as digits as its factorization.

394832641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8057823 (or 8057816 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 394832641 is about 19870.3960956998. The cubic root of 394832641 is about 733.6197528333.

It can be divided in two parts, 39483 and 2641, that added together give a palindrome (42124).

The spelling of 394832641 in words is "three hundred ninety-four million, eight hundred thirty-two thousand, six hundred forty-one".