400023233 has 4 divisors (see below), whose sum is σ = 402033600. Its totient is φ = 398012868.

The previous prime is 400023223. The next prime is 400023257. The reversal of 400023233 is 332320004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400023233 - 2¹⁰ = 400022209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400023223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004885 + ... + 1005282.

It is an arithmetic number, because the mean of its divisors is an integer number (100508400).

Almost surely, 2^400023233 is an apocalyptic number.

It is an amenable number.

400023233 is a deficient number, since it is larger than the sum of its proper divisors (2010367).

400023233 is a wasteful number, since it uses less digits than its factorization.

400023233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010366.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 400023233 is about 20000.5808165663. The cubic root of 400023233 is about 736.8205646359.

Adding to 400023233 its reverse (332320004), we get a palindrome (732343237).

The spelling of 400023233 in words is "four hundred million, twenty-three thousand, two hundred thirty-three".