44720906 has 4 divisors (see below), whose sum is σ = 67081362. Its totient is φ = 22360452.

The previous prime is 44720899. The next prime is 44720909. The reversal of 44720906 is 60902744.

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

It can be written as a sum of positive squares in only one way, i.e., 35509681 + 9211225 = 5959^2 + 3035^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44720909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11180225 + ... + 11180228.

Almost surely, 2^44720906 is an apocalyptic number.

44720906 is a deficient number, since it is larger than the sum of its proper divisors (22360456).

44720906 is a wasteful number, since it uses less digits than its factorization.

44720906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22360455.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 44720906 is about 6687.3691389066. The cubic root of 44720906 is about 354.9524660286.

The spelling of 44720906 in words is "forty-four million, seven hundred twenty thousand, nine hundred six".