249563385 has 24 divisors (see below), whose sum is σ = 455345280. Its totient is φ = 126094752.

The previous prime is 249563381. The next prime is 249563389. The reversal of 249563385 is 583365942.

249563385 is a `hidden beast` number, since 2 + 4 + 9 + 5 + 633 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (249563381) and next prime (249563389).

It is not a de Polignac number, because 249563385 - 2² = 249563381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 249563385.

It is not an unprimeable number, because it can be changed into a prime (249563381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145089 + ... + 146798.

It is an arithmetic number, because the mean of its divisors is an integer number (18972720).

Almost surely, 2^249563385 is an apocalyptic number.

It is an amenable number.

249563385 is a deficient number, since it is larger than the sum of its proper divisors (205781895).

249563385 is a wasteful number, since it uses less digits than its factorization.

249563385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291917 (or 291914 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 249563385 is about 15797.5752886321. The cubic root of 249563385 is about 629.5935776254.

The spelling of 249563385 in words is "two hundred forty-nine million, five hundred sixty-three thousand, three hundred eighty-five".