249929 has 4 divisors (see below), whose sum is σ = 251076. Its totient is φ = 248784.

The previous prime is 249923. The next prime is 249943. The reversal of 249929 is 929942.

249929 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 123904 = 355^2 + 352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249929 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249929.

It is not an unprimeable number, because it can be changed into a prime (249923) 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, 134 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (62769).

2²⁴⁹⁹²⁹ is an apocalyptic number.

It is an amenable number.

249929 is a deficient number, since it is larger than the sum of its proper divisors (1147).

249929 is an equidigital number, since it uses as much as digits as its factorization.

249929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its digits is 11664, while the sum is 35.

The square root of 249929 is about 499.9289949583. The cubic root of 249929 is about 62.9900883038.

The spelling of 249929 in words is "two hundred forty-nine thousand, nine hundred twenty-nine".