249990000208 has 80 divisors (see below), whose sum is σ = 549241235200. Its totient is φ = 109272706560.

The previous prime is 249990000191. The next prime is 249990000283. The reversal of 249990000208 is 802000099942.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15479818 + ... + 15495958.

It is an arithmetic number, because the mean of its divisors is an integer number (6865515440).

Almost surely, 2^249990000208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249990000208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274620617600).

249990000208 is an abundant number, since it is smaller than the sum of its proper divisors (299251234992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249990000208 is a wasteful number, since it uses less digits than its factorization.

249990000208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100 (or 20094 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 249990000208 in words is "two hundred forty-nine billion, nine hundred ninety million, two hundred eight", and thus it is an aban number.