249366864 has 40 divisors (see below), whose sum is σ = 646922880. Its totient is φ = 82770688.

The previous prime is 249366833. The next prime is 249366937. The reversal of 249366864 is 468663942.

It is a super-2 number, since 2×249366864² = 124367665722388992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 604 + ... + 22340.

It is an arithmetic number, because the mean of its divisors is an integer number (16173072).

Almost surely, 2^249366864 is an apocalyptic number.

249366864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

249366864 is an abundant number, since it is smaller than the sum of its proper divisors (397556016).

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

249366864 is a wasteful number, since it uses less digits than its factorization.

249366864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21987 (or 21981 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 48.

The square root of 249366864 is about 15791.3540901343. The cubic root of 249366864 is about 629.4282744624.

The spelling of 249366864 in words is "two hundred forty-nine million, three hundred sixty-six thousand, eight hundred sixty-four".