247442259 has 8 divisors (see below), whose sum is σ = 349330320. Its totient is φ = 155257856.

The previous prime is 247442249. The next prime is 247442281. The reversal of 247442259 is 952244742.

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

It is a cyclic number.

It is not a de Polignac number, because 247442259 - 2⁵ = 247442227 is a prime.

It is a super-2 number, since 2×247442259² = 122455343078046162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247442249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2425854 + ... + 2425955.

It is an arithmetic number, because the mean of its divisors is an integer number (43666290).

Almost surely, 2^247442259 is an apocalyptic number.

247442259 is a deficient number, since it is larger than the sum of its proper divisors (101888061).

247442259 is a wasteful number, since it uses less digits than its factorization.

247442259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851829.

The product of its digits is 161280, while the sum is 39.

The square root of 247442259 is about 15730.2974860617. The cubic root of 247442259 is about 627.8047885757.

The spelling of 247442259 in words is "two hundred forty-seven million, four hundred forty-two thousand, two hundred fifty-nine".