249470293 has 4 divisors (see below), whose sum is σ = 252273420. Its totient is φ = 246667168.

The previous prime is 249470269. The next prime is 249470321. The reversal of 249470293 is 392074942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 224490289 = 4998^2 + 14983^2 .

It is a cyclic number.

It is not a de Polignac number, because 249470293 - 2⁵ = 249470261 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249470593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401430 + ... + 1401607.

It is an arithmetic number, because the mean of its divisors is an integer number (63068355).

Almost surely, 2^249470293 is an apocalyptic number.

It is an amenable number.

249470293 is a deficient number, since it is larger than the sum of its proper divisors (2803127).

249470293 is an equidigital number, since it uses as much as digits as its factorization.

249470293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803126.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 249470293 is about 15794.6286122846. The cubic root of 249470293 is about 629.5152843367.

The spelling of 249470293 in words is "two hundred forty-nine million, four hundred seventy thousand, two hundred ninety-three".