244991493 has 16 divisors (see below), whose sum is σ = 369800640. Its totient is φ = 160245072.

The previous prime is 244991489. The next prime is 244991519. The reversal of 244991493 is 394199442.

It is not a de Polignac number, because 244991493 - 2² = 244991489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244991473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84171 + ... + 87032.

It is an arithmetic number, because the mean of its divisors is an integer number (23112540).

Almost surely, 2^244991493 is an apocalyptic number.

It is an amenable number.

244991493 is a deficient number, since it is larger than the sum of its proper divisors (124809147).

244991493 is a wasteful number, since it uses less digits than its factorization.

244991493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171265 (or 171259 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 244991493 is about 15652.2040939926. The cubic root of 244991493 is about 625.7252321625.

The spelling of 244991493 in words is "two hundred forty-four million, nine hundred ninety-one thousand, four hundred ninety-three".