400441425 has 24 divisors (see below), whose sum is σ = 684896640. Its totient is φ = 206203200.

The previous prime is 400441403. The next prime is 400441439. The reversal of 400441425 is 524144004.

It is a happy number.

It is not a de Polignac number, because 400441425 - 2⁷ = 400441297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400441395 and 400441404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89881 + ... + 94230.

It is an arithmetic number, because the mean of its divisors is an integer number (28537360).

Almost surely, 2^400441425 is an apocalyptic number.

It is an amenable number.

400441425 is a deficient number, since it is larger than the sum of its proper divisors (284455215).

400441425 is a wasteful number, since it uses less digits than its factorization.

400441425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184153 (or 184148 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 400441425 is about 20011.0325820533. The cubic root of 400441425 is about 737.0772373544.

Adding to 400441425 its reverse (524144004), we get a palindrome (924585429).

The spelling of 400441425 in words is "four hundred million, four hundred forty-one thousand, four hundred twenty-five".