249084470209 has 8 divisors (see below), whose sum is σ = 249843365928. Its totient is φ = 248325692160.

The previous prime is 249084470149. The next prime is 249084470249. The reversal of 249084470209 is 902074480942.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4519603984 + 244564866225 = 67228^2 + 494535^2 .

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 249084470209 - 2¹⁷ = 249084339137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249084470249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6201339 + ... + 6241375.

It is an arithmetic number, because the mean of its divisors is an integer number (31230420741).

Almost surely, 2^249084470209 is an apocalyptic number.

It is an amenable number.

249084470209 is a deficient number, since it is larger than the sum of its proper divisors (758895719).

249084470209 is a wasteful number, since it uses less digits than its factorization.

249084470209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58835.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 249084470209 in words is "two hundred forty-nine billion, eighty-four million, four hundred seventy thousand, two hundred nine".