249401293 has 4 divisors (see below), whose sum is σ = 257446528. Its totient is φ = 241356060.

The previous prime is 249401287. The next prime is 249401297. The reversal of 249401293 is 392104942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249401293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249401297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022571 + ... + 4022632.

It is an arithmetic number, because the mean of its divisors is an integer number (64361632).

Almost surely, 2^249401293 is an apocalyptic number.

It is an amenable number.

249401293 is a deficient number, since it is larger than the sum of its proper divisors (8045235).

249401293 is an equidigital number, since it uses as much as digits as its factorization.

249401293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045234.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 249401293 is about 15792.4441743512. Note that the first 3 decimals coincide. The cubic root of 249401293 is about 629.4572406055.

The spelling of 249401293 in words is "two hundred forty-nine million, four hundred one thousand, two hundred ninety-three".