402144443 has 32 divisors (see below), whose sum is σ = 457228800. Its totient is φ = 351876096.

The previous prime is 402144433. The next prime is 402144467. The reversal of 402144443 is 344441204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 402144443 - 2⁴ = 402144427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402144403) 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 31 ways as a sum of consecutive naturals, for example, 2246528 + ... + 2246706.

It is an arithmetic number, because the mean of its divisors is an integer number (14288400).

Almost surely, 2^402144443 is an apocalyptic number.

402144443 is a deficient number, since it is larger than the sum of its proper divisors (55084357).

402144443 is a wasteful number, since it uses less digits than its factorization.

402144443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 402144443 is about 20053.5394132806. The cubic root of 402144443 is about 738.1206529823.

Adding to 402144443 its reverse (344441204), we get a palindrome (746585647).

The spelling of 402144443 in words is "four hundred two million, one hundred forty-four thousand, four hundred forty-three".