247872383 has 4 divisors (see below), whose sum is σ = 270406248. Its totient is φ = 225338520.

The previous prime is 247872379. The next prime is 247872413. The reversal of 247872383 is 383278742.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 247872383 - 2² = 247872379 is a prime.

It is a super-2 number, since 2×247872383² = 122881436508197378, 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 (247872323) 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 3 ways as a sum of consecutive naturals, for example, 11266916 + ... + 11266937.

It is an arithmetic number, because the mean of its divisors is an integer number (67601562).

Almost surely, 2^247872383 is an apocalyptic number.

247872383 is a deficient number, since it is larger than the sum of its proper divisors (22533865).

247872383 is a wasteful number, since it uses less digits than its factorization.

247872383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22533864.

The product of its digits is 451584, while the sum is 44.

The square root of 247872383 is about 15743.9633828334. The cubic root of 247872383 is about 628.1683448979.

The spelling of 247872383 in words is "two hundred forty-seven million, eight hundred seventy-two thousand, three hundred eighty-three".