45440023 has 8 divisors (see below), whose sum is σ = 46752192. Its totient is φ = 44142336.

The previous prime is 45440009. The next prime is 45440047. The reversal of 45440023 is 32004454.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45440023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45439976 and 45440003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45480023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2911 + ... + 9967.

It is an arithmetic number, because the mean of its divisors is an integer number (5844024).

Almost surely, 2^45440023 is an apocalyptic number.

45440023 is a deficient number, since it is larger than the sum of its proper divisors (1312169).

45440023 is a wasteful number, since it uses less digits than its factorization.

45440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 45440023 is about 6740.9215245395. The cubic root of 45440023 is about 356.8449163853.

Adding to 45440023 its reverse (32004454), we get a palindrome (77444477).

The spelling of 45440023 in words is "forty-five million, four hundred forty thousand, twenty-three".