249668134 has 8 divisors (see below), whose sum is σ = 387416160. Its totient is φ = 120529416.

The previous prime is 249668093. The next prime is 249668143. The reversal of 249668134 is 431866942.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 2152254 + ... + 2152369.

It is an arithmetic number, because the mean of its divisors is an integer number (48427020).

Almost surely, 2^249668134 is an apocalyptic number.

249668134 is a deficient number, since it is larger than the sum of its proper divisors (137748026).

249668134 is a wasteful number, since it uses less digits than its factorization.

249668134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304654.

The product of its digits is 248832, while the sum is 43.

The square root of 249668134 is about 15800.8902913728. The cubic root of 249668134 is about 629.6816515401.

The spelling of 249668134 in words is "two hundred forty-nine million, six hundred sixty-eight thousand, one hundred thirty-four".