249546449 has 4 divisors (see below), whose sum is σ = 250344036. Its totient is φ = 248748864.

The previous prime is 249546439. The next prime is 249546461. The reversal of 249546449 is 944645942.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10627600 + 238918849 = 3260^2 + 15457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249546449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249546439) 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, 398324 + ... + 398949.

It is an arithmetic number, because the mean of its divisors is an integer number (62586009).

Almost surely, 2^249546449 is an apocalyptic number.

It is an amenable number.

249546449 is a deficient number, since it is larger than the sum of its proper divisors (797587).

249546449 is an equidigital number, since it uses as much as digits as its factorization.

249546449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797586.

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

The square root of 249546449 is about 15797.0392479097. The cubic root of 249546449 is about 629.5793353678.

The spelling of 249546449 in words is "two hundred forty-nine million, five hundred forty-six thousand, four hundred forty-nine".