44640245 has 8 divisors (see below), whose sum is σ = 57689016. Its totient is φ = 32965056.

The previous prime is 44640229. The next prime is 44640259. The reversal of 44640245 is 54204644.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 44542276 = 313^2 + 6674^2 .

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 44640245 - 2⁴ = 44640229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343322 + ... + 343451.

It is an arithmetic number, because the mean of its divisors is an integer number (7211127).

Almost surely, 2^44640245 is an apocalyptic number.

It is an amenable number.

44640245 is a deficient number, since it is larger than the sum of its proper divisors (13048771).

44640245 is a wasteful number, since it uses less digits than its factorization.

44640245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686791.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 44640245 is about 6681.3355700788. The cubic root of 44640245 is about 354.7389338945.

Adding to 44640245 its reverse (54204644), we get a palindrome (98844889).

The spelling of 44640245 in words is "forty-four million, six hundred forty thousand, two hundred forty-five".