400405484 has 6 divisors (see below), whose sum is σ = 700709604. Its totient is φ = 200202740.

The previous prime is 400405463. The next prime is 400405507. The reversal of 400405484 is 484504004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050682 + ... + 50050689.

It is an arithmetic number, because the mean of its divisors is an integer number (116784934).

Almost surely, 2^400405484 is an apocalyptic number.

It is an amenable number.

400405484 is a deficient number, since it is larger than the sum of its proper divisors (300304120).

400405484 is a wasteful number, since it uses less digits than its factorization.

400405484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100101375 (or 100101373 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 400405484 is about 20010.1345322814. The cubic root of 400405484 is about 737.0551849526.

Adding to 400405484 its reverse (484504004), we get a palindrome (884909488).

The spelling of 400405484 in words is "four hundred million, four hundred five thousand, four hundred eighty-four".