400664433 has 8 divisors (see below), whose sum is σ = 575313088. Its totient is φ = 246562704.

The previous prime is 400664399. The next prime is 400664441. The reversal of 400664433 is 334466004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400664433 - 2¹⁰ = 400663409 is a prime.

It is a super-2 number, since 2×400664433² = 321063975742422978, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400664433.

It is not an unprimeable number, because it can be changed into a prime (400664443) 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 7 ways as a sum of consecutive naturals, for example, 5136685 + ... + 5136762.

It is an arithmetic number, because the mean of its divisors is an integer number (71914136).

Almost surely, 2^400664433 is an apocalyptic number.

It is an amenable number.

400664433 is a deficient number, since it is larger than the sum of its proper divisors (174648655).

400664433 is a wasteful number, since it uses less digits than its factorization.

400664433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10273463.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 400664433 is about 20016.6039327354. The cubic root of 400664433 is about 737.2140393984.

The spelling of 400664433 in words is "four hundred million, six hundred sixty-four thousand, four hundred thirty-three".