402044223 has 8 divisors (see below), whose sum is σ = 612638848. Its totient is φ = 229739544.

The previous prime is 402044219. The next prime is 402044243. The reversal of 402044223 is 322440204.

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

It is not a de Polignac number, because 402044223 - 2² = 402044219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 19144963 = 402044223 / (4 + 0 + 2 + 0 + 4 + 4 + 2 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402044223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402044213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9572461 + ... + 9572502.

It is an arithmetic number, because the mean of its divisors is an integer number (76579856).

Almost surely, 2^402044223 is an apocalyptic number.

402044223 is a deficient number, since it is larger than the sum of its proper divisors (210594625).

402044223 is a wasteful number, since it uses less digits than its factorization.

402044223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19144973.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 402044223 is about 20051.0404468197. The cubic root of 402044223 is about 738.0593312366.

Adding to 402044223 its reverse (322440204), we get a palindrome (724484427).

The spelling of 402044223 in words is "four hundred two million, forty-four thousand, two hundred twenty-three".