249243406 has 8 divisors (see below), whose sum is σ = 393542280. Its totient is φ = 118062648.

The previous prime is 249243391. The next prime is 249243413. The reversal of 249243406 is 604342942.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3279481 + ... + 3279556.

It is an arithmetic number, because the mean of its divisors is an integer number (49192785).

Almost surely, 2^249243406 is an apocalyptic number.

249243406 is a deficient number, since it is larger than the sum of its proper divisors (144298874).

249243406 is a wasteful number, since it uses less digits than its factorization.

249243406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6559058.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 249243406 is about 15787.4445683904. Note that the first 3 decimals coincide. The cubic root of 249243406 is about 629.3243836431.

The spelling of 249243406 in words is "two hundred forty-nine million, two hundred forty-three thousand, four hundred six".