244990247 has 4 divisors (see below), whose sum is σ = 259401456. Its totient is φ = 230579040.

The previous prime is 244990223. The next prime is 244990267. The reversal of 244990247 is 742099442.

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

It is a cyclic number.

It is not a de Polignac number, because 244990247 - 2¹⁴ = 244973863 is a prime.

It is a super-2 number, since 2×244990247² = 120040442250242018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244990217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7205579 + ... + 7205612.

It is an arithmetic number, because the mean of its divisors is an integer number (64850364).

Almost surely, 2^244990247 is an apocalyptic number.

244990247 is a deficient number, since it is larger than the sum of its proper divisors (14411209).

244990247 is a wasteful number, since it uses less digits than its factorization.

244990247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411208.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 244990247 is about 15652.1642912410. The cubic root of 244990247 is about 625.7241713706.

The spelling of 244990247 in words is "two hundred forty-four million, nine hundred ninety thousand, two hundred forty-seven".