244400661 has 12 divisors (see below), whose sum is σ = 365196780. Its totient is φ = 157315200.

The previous prime is 244400647. The next prime is 244400671. The reversal of 244400661 is 166004442.

It can be written as a sum of positive squares in 2 ways, for example, as 60933636 + 183467025 = 7806^2 + 13545^2 .

It is not a de Polignac number, because 244400661 - 2¹³ = 244392469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244400671) 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 in 11 ways as a sum of consecutive naturals, for example, 467940 + ... + 468461.

It is an arithmetic number, because the mean of its divisors is an integer number (30433065).

Almost surely, 2^244400661 is an apocalyptic number.

It is an amenable number.

244400661 is a deficient number, since it is larger than the sum of its proper divisors (120796119).

244400661 is a wasteful number, since it uses less digits than its factorization.

244400661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936436 (or 936433 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 244400661 is about 15633.3189374490. The cubic root of 244400661 is about 625.2218186517.

The spelling of 244400661 in words is "two hundred forty-four million, four hundred thousand, six hundred sixty-one".