402444024423 has 16 divisors (see below), whose sum is σ = 613278900480. Its totient is φ = 229956440256.

The previous prime is 402444024413. The next prime is 402444024427. The reversal of 402444024423 is 324420444204.

It is not a de Polignac number, because 402444024423 - 2¹² = 402444020327 is a prime.

It is a super-2 number, since 2×402444024423² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402444024427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45853 + ... + 898326.

It is an arithmetic number, because the mean of its divisors is an integer number (38329931280).

Almost surely, 2^402444024423 is an apocalyptic number.

402444024423 is a deficient number, since it is larger than the sum of its proper divisors (210834876057).

402444024423 is a wasteful number, since it uses less digits than its factorization.

402444024423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964486.

The product of its (nonzero) digits is 98304, while the sum is 33.

Adding to 402444024423 its reverse (324420444204), we get a palindrome (726864468627).

The spelling of 402444024423 in words is "four hundred two billion, four hundred forty-four million, twenty-four thousand, four hundred twenty-three".