247994 has 4 divisors (see below), whose sum is σ = 371994. Its totient is φ = 123996.

The previous prime is 247993. The next prime is 247997. The reversal of 247994 is 499742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 499742 = 2 ⋅249871.

It can be written as a sum of positive squares in only one way, i.e., 235225 + 12769 = 485^2 + 113^2 .

It is a nialpdrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247994.

It is not an unprimeable number, because it can be changed into a prime (247991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61997 + ... + 62000.

2²⁴⁷⁹⁹⁴ is an apocalyptic number.

247994 is a deficient number, since it is larger than the sum of its proper divisors (124000).

247994 is a wasteful number, since it uses less digits than its factorization.

247994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123999.

The product of its digits is 18144, while the sum is 35.

The square root of 247994 is about 497.9899597381. The cubic root of 247994 is about 62.8271063694.

The spelling of 247994 in words is "two hundred forty-seven thousand, nine hundred ninety-four".