244691389 has 4 divisors (see below), whose sum is σ = 246058560. Its totient is φ = 243324220.

The previous prime is 244691341. The next prime is 244691393. The reversal of 244691389 is 983196442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 244691389 - 2⁷ = 244691261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244691399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683317 + ... + 683674.

It is an arithmetic number, because the mean of its divisors is an integer number (61514640).

Almost surely, 2^244691389 is an apocalyptic number.

It is an amenable number.

244691389 is a deficient number, since it is larger than the sum of its proper divisors (1367171).

244691389 is a wasteful number, since it uses less digits than its factorization.

244691389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367170.

The product of its digits is 373248, while the sum is 46.

The square root of 244691389 is about 15642.6145193187. The cubic root of 244691389 is about 625.4696323044.

The spelling of 244691389 in words is "two hundred forty-four million, six hundred ninety-one thousand, three hundred eighty-nine".