249890273 has 2 divisors, whose sum is σ = 249890274. Its totient is φ = 249890272.

The previous prime is 249890237. The next prime is 249890279. The reversal of 249890273 is 372098942.

249890273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (249890237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206554384 + 43335889 = 14372^2 + 6583^2 .

It is a cyclic number.

It is not a de Polignac number, because 249890273 - 2¹² = 249886177 is a prime.

It is not a weakly prime, because it can be changed into another prime (249890279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124945136 + 124945137.

It is an arithmetic number, because the mean of its divisors is an integer number (124945137).

Almost surely, 2^249890273 is an apocalyptic number.

It is an amenable number.

249890273 is a deficient number, since it is larger than the sum of its proper divisors (1).

249890273 is an equidigital number, since it uses as much as digits as its factorization.

249890273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 249890273 is about 15807.9180476115. The cubic root of 249890273 is about 629.8683465555.

The spelling of 249890273 in words is "two hundred forty-nine million, eight hundred ninety thousand, two hundred seventy-three".