249474161 has 8 divisors (see below), whose sum is σ = 263928000. Its totient is φ = 235152720.

The previous prime is 249474151. The next prime is 249474187. The reversal of 249474161 is 161474942.

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 249474161 - 2¹⁰ = 249473137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249474151) by changing a digit.

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, 29210 + ... + 36771.

It is an arithmetic number, because the mean of its divisors is an integer number (32991000).

Almost surely, 2^249474161 is an apocalyptic number.

It is an amenable number.

249474161 is a deficient number, since it is larger than the sum of its proper divisors (14453839).

249474161 is a wasteful number, since it uses less digits than its factorization.

249474161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66199.

The product of its digits is 48384, while the sum is 38.

The square root of 249474161 is about 15794.7510585004. The cubic root of 249474161 is about 629.5185378337.

The spelling of 249474161 in words is "two hundred forty-nine million, four hundred seventy-four thousand, one hundred sixty-one".