247081089 has 8 divisors (see below), whose sum is σ = 329521792. Its totient is φ = 164680560.

The previous prime is 247081069. The next prime is 247081097. The reversal of 247081089 is 980180742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247081089 - 2¹³ = 247072897 is a prime.

It is a super-2 number, since 2×247081089² = 122098129082851842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247081069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10059 + ... + 24399.

It is an arithmetic number, because the mean of its divisors is an integer number (41190224).

Almost surely, 2^247081089 is an apocalyptic number.

It is an amenable number.

247081089 is a deficient number, since it is larger than the sum of its proper divisors (82440703).

247081089 is a wasteful number, since it uses less digits than its factorization.

247081089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20087.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 247081089 is about 15718.8132185607. The cubic root of 247081089 is about 627.4991891124.

The spelling of 247081089 in words is "two hundred forty-seven million, eighty-one thousand, eighty-nine".