249085806 has 32 divisors (see below), whose sum is σ = 525201408. Its totient is φ = 78637920.

The previous prime is 249085777. The next prime is 249085817. The reversal of 249085806 is 608580942.

249085806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5505 + ... + 22988.

It is an arithmetic number, because the mean of its divisors is an integer number (16412544).

Almost surely, 2^249085806 is an apocalyptic number.

249085806 is an abundant number, since it is smaller than the sum of its proper divisors (276115602).

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

249085806 is a wasteful number, since it uses less digits than its factorization.

249085806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28576.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 249085806 is about 15782.4524710198. The cubic root of 249085806 is about 629.1917122163.

The spelling of 249085806 in words is "two hundred forty-nine million, eighty-five thousand, eight hundred six".