247299 has 16 divisors (see below), whose sum is σ = 376992. Its totient is φ = 142848.

The previous prime is 247279. The next prime is 247301. The reversal of 247299 is 992742.

247299 = T₁₆₂ + T₁₆₃ + ... + T₁₇₈.

It is not a de Polignac number, because 247299 - 2⁹ = 246787 is a prime.

It is a super-2 number, since 2×247299² = 122313590802, which contains 22 as substring.

247299 is a lucky number.

It is a nialpdrome in base 13.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (247229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477 + ... + 849.

It is an arithmetic number, because the mean of its divisors is an integer number (23562).

2²⁴⁷²⁹⁹ is an apocalyptic number.

247299 is a deficient number, since it is larger than the sum of its proper divisors (129693).

247299 is a wasteful number, since it uses less digits than its factorization.

247299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its digits is 9072, while the sum is 33.

The square root of 247299 is about 497.2916649211. The cubic root of 247299 is about 62.7683607377.

The spelling of 247299 in words is "two hundred forty-seven thousand, two hundred ninety-nine".