45440423 has 8 divisors (see below), whose sum is σ = 53198880. Its totient is φ = 37998720.

The previous prime is 45440413. The next prime is 45440441. The reversal of 45440423 is 32404454.

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

It is a cyclic number.

It is not a de Polignac number, because 45440423 - 2¹² = 45436327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45440392 and 45440401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45440413) 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, 78878 + ... + 79451.

It is an arithmetic number, because the mean of its divisors is an integer number (6649860).

Almost surely, 2^45440423 is an apocalyptic number.

45440423 is a deficient number, since it is larger than the sum of its proper divisors (7758457).

45440423 is a wasteful number, since it uses less digits than its factorization.

45440423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158377.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 45440423 is about 6740.9511940082. The cubic root of 45440423 is about 356.8459634619.

Adding to 45440423 its reverse (32404454), we get a palindrome (77844877).

The spelling of 45440423 in words is "forty-five million, four hundred forty thousand, four hundred twenty-three".