247000387 has 4 divisors (see below), whose sum is σ = 247961736. Its totient is φ = 246039040.

The previous prime is 247000367. The next prime is 247000393. The reversal of 247000387 is 783000742.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247000387 is a prime.

It is a super-2 number, since 2×247000387² = 122018382356299538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247000307) 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, 480289 + ... + 480802.

It is an arithmetic number, because the mean of its divisors is an integer number (61990434).

Almost surely, 2^247000387 is an apocalyptic number.

247000387 is a deficient number, since it is larger than the sum of its proper divisors (961349).

247000387 is an equidigital number, since it uses as much as digits as its factorization.

247000387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961348.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 247000387 is about 15716.2459576071. The cubic root of 247000387 is about 627.4308634273.

The spelling of 247000387 in words is "two hundred forty-seven million, three hundred eighty-seven", and thus it is an aban number.