249654449 has 4 divisors (see below), whose sum is σ = 272350320. Its totient is φ = 226958580.

The previous prime is 249654437. The next prime is 249654451. The reversal of 249654449 is 944456942.

It is a happy number.

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-249654449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (249654409) 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, 11347919 + ... + 11347940.

It is an arithmetic number, because the mean of its divisors is an integer number (68087580).

Almost surely, 2^249654449 is an apocalyptic number.

It is an amenable number.

249654449 is a deficient number, since it is larger than the sum of its proper divisors (22695871).

249654449 is a wasteful number, since it uses less digits than its factorization.

249654449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22695870.

The product of its digits is 1244160, while the sum is 47.

The square root of 249654449 is about 15800.4572402193. The cubic root of 249654449 is about 629.6701464664.

The spelling of 249654449 in words is "two hundred forty-nine million, six hundred fifty-four thousand, four hundred forty-nine".