249998923 has 8 divisors (see below), whose sum is σ = 269045280. Its totient is φ = 231434880.

The previous prime is 249998893. The next prime is 249998951. The reversal of 249998923 is 329899942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249998923 - 2¹³ = 249990731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249998993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119503 + ... + 121576.

It is an arithmetic number, because the mean of its divisors is an integer number (33630660).

Almost surely, 2^249998923 is an apocalyptic number.

249998923 is a deficient number, since it is larger than the sum of its proper divisors (19046357).

249998923 is a wasteful number, since it uses less digits than its factorization.

249998923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241157.

The product of its digits is 2519424, while the sum is 55.

The square root of 249998923 is about 15811.3542430748. The cubic root of 249998923 is about 629.9596203228.

The spelling of 249998923 in words is "two hundred forty-nine million, nine hundred ninety-eight thousand, nine hundred twenty-three".