249473074 has 4 divisors (see below), whose sum is σ = 374209614. Its totient is φ = 124736536.

The previous prime is 249473009. The next prime is 249473083. The reversal of 249473074 is 470374942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470374942 = 2 ⋅235187471.

It can be written as a sum of positive squares in only one way, i.e., 142205625 + 107267449 = 11925^2 + 10357^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62368267 + ... + 62368270.

Almost surely, 2^249473074 is an apocalyptic number.

249473074 is a deficient number, since it is larger than the sum of its proper divisors (124736540).

249473074 is a wasteful number, since it uses less digits than its factorization.

249473074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124736539.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 249473074 is about 15794.7166482973. The cubic root of 249473074 is about 629.5176235271.

The spelling of 249473074 in words is "two hundred forty-nine million, four hundred seventy-three thousand, seventy-four".