249404890 has 16 divisors (see below), whose sum is σ = 513061632. Its totient is φ = 85510224.

The previous prime is 249404873. The next prime is 249404917. The reversal of 249404890 is 98404942.

249404890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 1781394 + ... + 1781533.

It is an arithmetic number, because the mean of its divisors is an integer number (32066352).

Almost surely, 2^249404890 is an apocalyptic number.

249404890 is an abundant number, since it is smaller than the sum of its proper divisors (263656742).

249404890 is a wasteful number, since it uses less digits than its factorization.

249404890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562941.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 249404890 is about 15792.5580575156. The cubic root of 249404890 is about 629.4602667150.

The spelling of 249404890 in words is "two hundred forty-nine million, four hundred four thousand, eight hundred ninety".