249374605 has 8 divisors (see below), whose sum is σ = 299503512. Its totient is φ = 199330368.

The previous prime is 249374597. The next prime is 249374611. The reversal of 249374605 is 506473942.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4076361 + 245298244 = 2019^2 + 15662^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 249374605 - 2³ = 249374597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14494 + ... + 26623.

It is an arithmetic number, because the mean of its divisors is an integer number (37437939).

Almost surely, 2^249374605 is an apocalyptic number.

It is an amenable number.

249374605 is a deficient number, since it is larger than the sum of its proper divisors (50128907).

249374605 is a wasteful number, since it uses less digits than its factorization.

249374605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42335.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 249374605 is about 15791.5991907090. The cubic root of 249374605 is about 629.4347874286.

The spelling of 249374605 in words is "two hundred forty-nine million, three hundred seventy-four thousand, six hundred five".