40444434223 has 4 divisors (see below), whose sum is σ = 40468325128. Its totient is φ = 40420543320.

The previous prime is 40444434179. The next prime is 40444434241. The reversal of 40444434223 is 32243444404.

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 40444434223 - 2²¹ = 40442337071 is a prime.

It is a super-2 number, since 2×40444434223² (a number of 22 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 (40444434263) 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, 11942913 + ... + 11946298.

It is an arithmetic number, because the mean of its divisors is an integer number (10117081282).

Almost surely, 2^40444434223 is an apocalyptic number.

40444434223 is a deficient number, since it is larger than the sum of its proper divisors (23890905).

40444434223 is a wasteful number, since it uses less digits than its factorization.

40444434223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23890904.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 40444434223 its reverse (32243444404), we get a palindrome (72687878627).

The spelling of 40444434223 in words is "forty billion, four hundred forty-four million, four hundred thirty-four thousand, two hundred twenty-three".