249448481 has 4 divisors (see below), whose sum is σ = 249483264. Its totient is φ = 249413700.

The previous prime is 249448457. The next prime is 249448513. The reversal of 249448481 is 184844942.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 184844942 = 2 ⋅92422471.

It is a cyclic number.

It is not a de Polignac number, because 249448481 - 2⁶ = 249448417 is a prime.

It is a super-2 number, since 2×249448481² = 124449089346414722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249448421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225 + ... + 22446.

It is an arithmetic number, because the mean of its divisors is an integer number (62370816).

Almost surely, 2^249448481 is an apocalyptic number.

It is an amenable number.

249448481 is a deficient number, since it is larger than the sum of its proper divisors (34783).

249448481 is a wasteful number, since it uses less digits than its factorization.

249448481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34782.

The product of its digits is 294912, while the sum is 44.

The square root of 249448481 is about 15793.9381092874. The cubic root of 249448481 is about 629.4969369450.

The spelling of 249448481 in words is "two hundred forty-nine million, four hundred forty-eight thousand, four hundred eighty-one".