444402332431 has 4 divisors (see below), whose sum is σ = 446342954200. Its totient is φ = 442461710664.

The previous prime is 444402332401. The next prime is 444402332447. The reversal of 444402332431 is 134233204444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 444402332431 - 2²³ = 444393943823 is a prime.

It is a super-2 number, since 2×444402332431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444402332401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970310541 + ... + 970310998.

It is an arithmetic number, because the mean of its divisors is an integer number (111585738550).

Almost surely, 2^444402332431 is an apocalyptic number.

444402332431 is a deficient number, since it is larger than the sum of its proper divisors (1940621769).

444402332431 is a wasteful number, since it uses less digits than its factorization.

444402332431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940621768.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 444402332431 its reverse (134233204444), we get a palindrome (578635536875).

The spelling of 444402332431 in words is "four hundred forty-four billion, four hundred two million, three hundred thirty-two thousand, four hundred thirty-one".