249906593 has 4 divisors (see below), whose sum is σ = 257968128. Its totient is φ = 241845060.

The previous prime is 249906499. The next prime is 249906599. The reversal of 249906593 is 395609942.

249906593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-249906593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249906599) 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, 4030721 + ... + 4030782.

It is an arithmetic number, because the mean of its divisors is an integer number (64492032).

Almost surely, 2^249906593 is an apocalyptic number.

It is an amenable number.

249906593 is a deficient number, since it is larger than the sum of its proper divisors (8061535).

249906593 is an equidigital number, since it uses as much as digits as its factorization.

249906593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061534.

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 249906593 is about 15808.4342361918. The cubic root of 249906593 is about 629.8820582105.

Subtracting from 249906593 its sum of digits (47), we obtain a triangular number (249906546 = T₂₂₃₅₆).

The spelling of 249906593 in words is "two hundred forty-nine million, nine hundred six thousand, five hundred ninety-three".