249849305 has 16 divisors (see below), whose sum is σ = 310886400. Its totient is φ = 192559680.

The previous prime is 249849287. The next prime is 249849311. The reversal of 249849305 is 503948942.

It is not a de Polignac number, because 249849305 - 2⁶ = 249849241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31976 + ... + 39014.

It is an arithmetic number, because the mean of its divisors is an integer number (19430400).

Almost surely, 2^249849305 is an apocalyptic number.

It is an amenable number.

249849305 is a deficient number, since it is larger than the sum of its proper divisors (61037095).

249849305 is a wasteful number, since it uses less digits than its factorization.

249849305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7304.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 249849305 is about 15806.6221881843. The cubic root of 249849305 is about 629.8339236380.

The spelling of 249849305 in words is "two hundred forty-nine million, eight hundred forty-nine thousand, three hundred five".