247448387 has 8 divisors (see below), whose sum is σ = 257115600. Its totient is φ = 237856864.

The previous prime is 247448371. The next prime is 247448393. The reversal of 247448387 is 783844742.

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 247448387 - 2⁴ = 247448371 is a prime.

It is a super-2 number, since 2×247448387² = 122461408457803538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247448287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12212 + ... + 25377.

It is an arithmetic number, because the mean of its divisors is an integer number (32139450).

Almost surely, 2^247448387 is an apocalyptic number.

247448387 is a deficient number, since it is larger than the sum of its proper divisors (9667213).

247448387 is a wasteful number, since it uses less digits than its factorization.

247448387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37845.

The product of its digits is 1204224, while the sum is 47.

The square root of 247448387 is about 15730.4922682032. The cubic root of 247448387 is about 627.8099711396.

The spelling of 247448387 in words is "two hundred forty-seven million, four hundred forty-eight thousand, three hundred eighty-seven".