247044289 has 16 divisors (see below), whose sum is σ = 280558080. Its totient is φ = 216103680.

The previous prime is 247044277. The next prime is 247044313. The reversal of 247044289 is 982440742.

247044289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 247044289 - 2⁵ = 247044257 is a prime.

It is a super-2 number, since 2×247044289² = 122061761455031042, which contains 22 as substring.

It is a Duffinian number.

247044289 is a modest number, since divided by 44289 gives 247 as remainder.

It is not an unprimeable number, because it can be changed into a prime (247044089) 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, 9904 + ... + 24334.

It is an arithmetic number, because the mean of its divisors is an integer number (17534880).

Almost surely, 2^247044289 is an apocalyptic number.

It is an amenable number.

247044289 is a deficient number, since it is larger than the sum of its proper divisors (33513791).

247044289 is a wasteful number, since it uses less digits than its factorization.

247044289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 247044289 is about 15717.6426031387. The cubic root of 247044289 is about 627.4680345404.

The spelling of 247044289 in words is "two hundred forty-seven million, forty-four thousand, two hundred eighty-nine".