400811464 has 16 divisors (see below), whose sum is σ = 761817420. Its totient is φ = 197660160.

The previous prime is 400811461. The next prime is 400811473. The reversal of 400811464 is 464118004.

It can be written as a sum of positive squares in 2 ways, for example, as 390378564 + 10432900 = 19758^2 + 3230^2 .

It is not an unprimeable number, because it can be changed into a prime (400811461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342577 + ... + 343744.

Almost surely, 2^400811464 is an apocalyptic number.

It is an amenable number.

400811464 is a deficient number, since it is larger than the sum of its proper divisors (361005956).

400811464 is a wasteful number, since it uses less digits than its factorization.

400811464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686400 (or 686396 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 400811464 is about 20020.2763217694. The cubic root of 400811464 is about 737.3042063413.

Adding to 400811464 its reverse (464118004), we get a palindrome (864929468).

The spelling of 400811464 in words is "four hundred million, eight hundred eleven thousand, four hundred sixty-four".