244978389 has 6 divisors (see below), whose sum is σ = 353857686. Its totient is φ = 163318920.

The previous prime is 244978367. The next prime is 244978417. The reversal of 244978389 is 983879442.

244978389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 157929489 + 87048900 = 12567^2 + 9330^2 .

It is not a de Polignac number, because 244978389 - 2⁸ = 244978133 is a prime.

It is a super-2 number, since 2×244978389² = 120028822154070642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244978339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13609902 + ... + 13609919.

It is an arithmetic number, because the mean of its divisors is an integer number (58976281).

Almost surely, 2^244978389 is an apocalyptic number.

It is an amenable number.

244978389 is a deficient number, since it is larger than the sum of its proper divisors (108879297).

244978389 is a wasteful number, since it uses less digits than its factorization.

244978389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27219827 (or 27219824 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 244978389 is about 15651.7854892022. The cubic root of 244978389 is about 625.7140757892.

The spelling of 244978389 in words is "two hundred forty-four million, nine hundred seventy-eight thousand, three hundred eighty-nine".