244040645 has 16 divisors (see below), whose sum is σ = 297166320. Its totient is φ = 192374784.

The previous prime is 244040639. The next prime is 244040677. The reversal of 244040645 is 546040442.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 72352036 + 171688609 = 8506^2 + 13103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244040645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106229 + ... + 108501.

It is an arithmetic number, because the mean of its divisors is an integer number (18572895).

Almost surely, 2^244040645 is an apocalyptic number.

It is an amenable number.

244040645 is a deficient number, since it is larger than the sum of its proper divisors (53125675).

244040645 is a wasteful number, since it uses less digits than its factorization.

244040645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584.

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

The square root of 244040645 is about 15621.8003123840. The cubic root of 244040645 is about 624.9146720845.

The spelling of 244040645 in words is "two hundred forty-four million, forty thousand, six hundred forty-five".