249248049 has 4 divisors (see below), whose sum is σ = 332330736. Its totient is φ = 166165364.

The previous prime is 249248039. The next prime is 249248053. The reversal of 249248049 is 940842942.

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 not a de Polignac number, because 249248049 - 2¹³ = 249239857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249248049.

It is not an unprimeable number, because it can be changed into a prime (249248009) 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, 41541339 + ... + 41541344.

It is an arithmetic number, because the mean of its divisors is an integer number (83082684).

Almost surely, 2^249248049 is an apocalyptic number.

It is an amenable number.

249248049 is a deficient number, since it is larger than the sum of its proper divisors (83082687).

249248049 is an equidigital number, since it uses as much as digits as its factorization.

249248049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83082686.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 249248049 is about 15787.5916149361. The cubic root of 249248049 is about 629.3282913826.

The spelling of 249248049 in words is "two hundred forty-nine million, two hundred forty-eight thousand, forty-nine".