244667889 has 24 divisors (see below), whose sum is σ = 361935912. Its totient is φ = 159217920.

The previous prime is 244667887. The next prime is 244667897. The reversal of 244667889 is 988766442.

It can be written as a sum of positive squares in 4 ways, for example, as 54641664 + 190026225 = 7392^2 + 13785^2 .

It is not a de Polignac number, because 244667889 - 2¹ = 244667887 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (244667887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73587 + ... + 76839.

It is an arithmetic number, because the mean of its divisors is an integer number (15080663).

Almost surely, 2^244667889 is an apocalyptic number.

It is an amenable number.

244667889 is a deficient number, since it is larger than the sum of its proper divisors (117268023).

244667889 is a wasteful number, since it uses less digits than its factorization.

244667889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457 (or 3454 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 244667889 is about 15641.8633480797. The cubic root of 244667889 is about 625.4496084327.

The spelling of 244667889 in words is "two hundred forty-four million, six hundred sixty-seven thousand, eight hundred eighty-nine".