249833385 has 12 divisors (see below), whose sum is σ = 433044612. Its totient is φ = 133244448.

The previous prime is 249833357. The next prime is 249833387. The reversal of 249833385 is 583338942.

It can be written as a sum of positive squares in 2 ways, for example, as 55398249 + 194435136 = 7443^2 + 13944^2 .

It is not a de Polignac number, because 249833385 - 2⁶ = 249833321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5551853 = 249833385 / (2 + 4 + 9 + 8 + 3 + 3 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 249833385.

It is not an unprimeable number, because it can be changed into a prime (249833387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2775882 + ... + 2775971.

It is an arithmetic number, because the mean of its divisors is an integer number (36087051).

Almost surely, 2^249833385 is an apocalyptic number.

It is an amenable number.

249833385 is a deficient number, since it is larger than the sum of its proper divisors (183211227).

249833385 is a wasteful number, since it uses less digits than its factorization.

249833385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551864 (or 5551861 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 249833385 is about 15806.1185937598. The cubic root of 249833385 is about 629.8205460156.

The spelling of 249833385 in words is "two hundred forty-nine million, eight hundred thirty-three thousand, three hundred eighty-five".