402234444 has 24 divisors (see below), whose sum is σ = 1042830320. Its totient is φ = 134078112.

The previous prime is 402234431. The next prime is 402234449. The reversal of 402234444 is 444432204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (402234449) 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, 1862089 + ... + 1862304.

Almost surely, 2^402234444 is an apocalyptic number.

It is an amenable number.

402234444 is an abundant number, since it is smaller than the sum of its proper divisors (640595876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402234444 is a wasteful number, since it uses less digits than its factorization.

402234444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724406 (or 3724398 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 402234444 is about 20055.7833055705. The cubic root of 402234444 is about 738.1757133326.

Adding to 402234444 its reverse (444432204), we get a palindrome (846666648).

The spelling of 402234444 in words is "four hundred two million, two hundred thirty-four thousand, four hundred forty-four".