247986441 has 10 divisors (see below), whose sum is σ = 370449002. Its totient is φ = 165324240.

The previous prime is 247986433. The next prime is 247986467. The reversal of 247986441 is 144689742.

It can be written as a sum of positive squares in only one way, i.e., 222129216 + 25857225 = 14904^2 + 5085^2 .

It is not a de Polignac number, because 247986441 - 2³ = 247986433 is a prime.

It is a super-2 number, since 2×247986441² = 122994549839692962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247986341) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1530700 + ... + 1530861.

Almost surely, 2^247986441 is an apocalyptic number.

It is an amenable number.

247986441 is a deficient number, since it is larger than the sum of its proper divisors (122462561).

247986441 is an equidigital number, since it uses as much as digits as its factorization.

247986441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061573 (or 3061564 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 247986441 is about 15747.5852434588. The cubic root of 247986441 is about 628.2646802749.

The spelling of 247986441 in words is "two hundred forty-seven million, nine hundred eighty-six thousand, four hundred forty-one".