402422223 has 48 divisors (see below), whose sum is σ = 654466560. Its totient is φ = 215410752.

The previous prime is 402422203. The next prime is 402422239. The reversal of 402422223 is 322224204.

It is not a de Polignac number, because 402422223 - 2⁶ = 402422159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 402422223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402422203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 826086 + ... + 826572.

It is an arithmetic number, because the mean of its divisors is an integer number (13634720).

Almost surely, 2^402422223 is an apocalyptic number.

402422223 is a deficient number, since it is larger than the sum of its proper divisors (252044337).

402422223 is a wasteful number, since it uses less digits than its factorization.

402422223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 625 counting only the distinct ones).

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

The square root of 402422223 is about 20060.4641770822. The cubic root of 402422223 is about 738.2905653671.

Adding to 402422223 its reverse (322224204), we get a palindrome (724646427).

The spelling of 402422223 in words is "four hundred two million, four hundred twenty-two thousand, two hundred twenty-three".