249698243 has 4 divisors (see below), whose sum is σ = 249925728. Its totient is φ = 249470760.

The previous prime is 249698231. The next prime is 249698257. The reversal of 249698243 is 342896942.

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-249698243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249698203) 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, 112088 + ... + 114293.

It is an arithmetic number, because the mean of its divisors is an integer number (62481432).

Almost surely, 2^249698243 is an apocalyptic number.

249698243 is a deficient number, since it is larger than the sum of its proper divisors (227485).

249698243 is a wasteful number, since it uses less digits than its factorization.

249698243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227484.

The product of its digits is 746496, while the sum is 47.

The square root of 249698243 is about 15801.8430254195. The cubic root of 249698243 is about 629.7069629037.

The spelling of 249698243 in words is "two hundred forty-nine million, six hundred ninety-eight thousand, two hundred forty-three".