249448789 has 8 divisors (see below), whose sum is σ = 254343320. Its totient is φ = 244601856.

The previous prime is 249448763. The next prime is 249448819. The reversal of 249448789 is 987844942.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11764900 + 237683889 = 3430^2 + 15417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249448789 - 2²³ = 241060181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249448729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224 + ... + 22369.

It is an arithmetic number, because the mean of its divisors is an integer number (31792915).

Almost surely, 2^249448789 is an apocalyptic number.

It is an amenable number.

249448789 is a deficient number, since it is larger than the sum of its proper divisors (4894531).

249448789 is a wasteful number, since it uses less digits than its factorization.

249448789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23799.

The product of its digits is 4644864, while the sum is 55.

The square root of 249448789 is about 15793.9478598608. The cubic root of 249448789 is about 629.4971960299.

It can be divided in two parts, 24944 and 8789, that added together give a palindrome (33733).

The spelling of 249448789 in words is "two hundred forty-nine million, four hundred forty-eight thousand, seven hundred eighty-nine".