249278466 has 8 divisors (see below), whose sum is σ = 498556944. Its totient is φ = 83092820.

The previous prime is 249278453. The next prime is 249278467. The reversal of 249278466 is 664872942.

It is a sphenic number, since it is the product of 3 distinct primes.

249278466 is an admirable number.

It is a super-2 number, since 2×249278466² = 124279507222626312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249278467) 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 3 ways as a sum of consecutive naturals, for example, 20773200 + ... + 20773211.

It is an arithmetic number, because the mean of its divisors is an integer number (62319618).

Almost surely, 2^249278466 is an apocalyptic number.

249278466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

249278466 is a wasteful number, since it uses less digits than its factorization.

249278466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41546416.

The product of its digits is 1161216, while the sum is 48.

The square root of 249278466 is about 15788.5549053737. The cubic root of 249278466 is about 629.3538903794.

The spelling of 249278466 in words is "two hundred forty-nine million, two hundred seventy-eight thousand, four hundred sixty-six".