10440644 has 6 divisors (see below), whose sum is σ = 18271134. Its totient is φ = 5220320.

The previous prime is 10440641. The next prime is 10440743. The reversal of 10440644 is 44604401.

It can be written as a sum of positive squares in only one way, i.e., 10432900 + 7744 = 3230^2 + 88^2 .

It is not an unprimeable number, because it can be changed into a prime (10440641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305077 + ... + 1305084.

It is an arithmetic number, because the mean of its divisors is an integer number (3045189).

Almost surely, 2^10440644 is an apocalyptic number.

It is an amenable number.

10440644 is a deficient number, since it is larger than the sum of its proper divisors (7830490).

10440644 is a wasteful number, since it uses less digits than its factorization.

10440644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610165 (or 2610163 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 10440644 is about 3231.1985392421. The cubic root of 10440644 is about 218.5625568167.

The spelling of 10440644 in words is "ten million, four hundred forty thousand, six hundred forty-four".