247860349 has 4 divisors (see below), whose sum is σ = 270393120. Its totient is φ = 225327580.

The previous prime is 247860329. The next prime is 247860359. The reversal of 247860349 is 943068742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 247860349 - 2⁹ = 247859837 is a prime.

It is a super-2 number, since 2×247860349² = 122869505212803602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247860329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11266369 + ... + 11266390.

It is an arithmetic number, because the mean of its divisors is an integer number (67598280).

Almost surely, 2^247860349 is an apocalyptic number.

It is an amenable number.

247860349 is a deficient number, since it is larger than the sum of its proper divisors (22532771).

247860349 is a wasteful number, since it uses less digits than its factorization.

247860349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22532770.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 247860349 is about 15743.5811999684. The cubic root of 247860349 is about 628.1581790482.

The spelling of 247860349 in words is "two hundred forty-seven million, eight hundred sixty thousand, three hundred forty-nine".