249998922 has 96 divisors (see below), whose sum is σ = 591851520. Its totient is φ = 76010400.

The previous prime is 249998893. The next prime is 249998951. The reversal of 249998922 is 229899942.

It is an interprime number because it is at equal distance from previous prime (249998893) and next prime (249998951).

It is a super-2 number, since 2×249998922² = 124998922002324168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1655547 + ... + 1655697.

It is an arithmetic number, because the mean of its divisors is an integer number (6165120).

Almost surely, 2^249998922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249998922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295925760).

249998922 is an abundant number, since it is smaller than the sum of its proper divisors (341852598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249998922 is a wasteful number, since it uses less digits than its factorization.

249998922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 325 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 249998922 is about 15811.3542114520. The cubic root of 249998922 is about 629.9596194829.

The spelling of 249998922 in words is "two hundred forty-nine million, nine hundred ninety-eight thousand, nine hundred twenty-two".