247274469289 has 9 divisors (see below), whose sum is σ = 262684627671. Its totient is φ = 232720956000.

The previous prime is 247274469251. The next prime is 247274469311. The reversal of 247274469289 is 982964472742.

The square root of 247274469289 is 497267.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 192514725225 + 54759744064 = 438765^2 + 234008^2 .

It is not a de Polignac number, because 247274469289 - 2⁷ = 247274469161 is a prime.

It is a super-2 number, since 2×247274469289² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247274469289.

It is not an unprimeable number, because it can be changed into a prime (247274469209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8438914 + ... + 8468164.

Almost surely, 2^247274469289 is an apocalyptic number.

247274469289 is the 497267-th square number.

247274469289 is the 248634-th centered octagonal number.

It is an amenable number.

247274469289 is a deficient number, since it is larger than the sum of its proper divisors (15410158382).

247274469289 is an frugal number, since it uses more digits than its factorization.

247274469289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58536 (or 29268 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 64.

Multiplying 247274469289 by its sum of digits (64), we get a square (15825566034496 = 3978136²).

The spelling of 247274469289 in words is "two hundred forty-seven billion, two hundred seventy-four million, four hundred sixty-nine thousand, two hundred eighty-nine".