249918426 has 32 divisors (see below), whose sum is σ = 565859520. Its totient is φ = 81733392.

The previous prime is 249918421. The next prime is 249918443. The reversal of 249918426 is 624819942.

249918426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (249918421) 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, 40800 + ... + 46523.

It is an arithmetic number, because the mean of its divisors is an integer number (17683110).

Almost surely, 2^249918426 is an apocalyptic number.

249918426 is an abundant number, since it is smaller than the sum of its proper divisors (315941094).

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

249918426 is a wasteful number, since it uses less digits than its factorization.

249918426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87387 (or 87381 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 249918426 is about 15808.8084940011. The cubic root of 249918426 is about 629.8919996272.

The spelling of 249918426 in words is "two hundred forty-nine million, nine hundred eighteen thousand, four hundred twenty-six".