4234440402 has 20 divisors (see below), whose sum is σ = 9488283486. Its totient is φ = 1411480080.

The previous prime is 4234440391. The next prime is 4234440403. The reversal of 4234440402 is 2040444324.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3724538841 + 509901561 = 61029^2 + 22581^2 .

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 (4234440403) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13069099 + ... + 13069422.

Almost surely, 2^4234440402 is an apocalyptic number.

4234440402 is an abundant number, since it is smaller than the sum of its proper divisors (5253843084).

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

4234440402 is a wasteful number, since it uses less digits than its factorization.

4234440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26138535 (or 26138526 counting only the distinct ones).

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

The square root of 4234440402 is about 65072.5779572317. The cubic root of 4234440402 is about 1617.8267360303.

Adding to 4234440402 its reverse (2040444324), we get a palindrome (6274884726).

The spelling of 4234440402 in words is "four billion, two hundred thirty-four million, four hundred forty thousand, four hundred two".