249900010 has 12 divisors (see below), whose sum is σ = 449910018. Its totient is φ = 99940008.

The previous prime is 249899999. The next prime is 249900011. The reversal of 249900010 is 10009942.

It can be written as a sum of positive squares in only one way, i.e., 224910009 + 24990001 = 14997^2 + 4999^2 .

It is not an unprimeable number, because it can be changed into a prime (249900011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47491 + ... + 52489.

Almost surely, 2^249900010 is an apocalyptic number.

249900010 is a deficient number, since it is larger than the sum of its proper divisors (200010008).

249900010 is an frugal number, since it uses more digits than its factorization.

249900010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 249900010 is about 15808.2260231817. The cubic root of 249900010 is about 629.8765274107.

Adding to 249900010 its reverse (10009942), we get a palindrome (259909952).

The spelling of 249900010 in words is "two hundred forty-nine million, nine hundred thousand, ten".