249218466 has 16 divisors (see below), whose sum is σ = 569642304. Its totient is φ = 71205264.

The previous prime is 249218447. The next prime is 249218471. The reversal of 249218466 is 664812942.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5933773 = 249218466 / (2 + 4 + 9 + 2 + 1 + 8 + 4 + 6 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2966845 + ... + 2966928.

It is an arithmetic number, because the mean of its divisors is an integer number (35602644).

Almost surely, 2^249218466 is an apocalyptic number.

249218466 is an abundant number, since it is smaller than the sum of its proper divisors (320423838).

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

249218466 is a wasteful number, since it uses less digits than its factorization.

249218466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5933785.

The product of its digits is 165888, while the sum is 42.

The square root of 249218466 is about 15786.6546804572. The cubic root of 249218466 is about 629.3033922838.

The spelling of 249218466 in words is "two hundred forty-nine million, two hundred eighteen thousand, four hundred sixty-six".