249430005 has 72 divisors (see below), whose sum is σ = 500441760. Its totient is φ = 114523200.

The previous prime is 249430003. The next prime is 249430007. The reversal of 249430005 is 500034942.

It is an interprime number because it is at equal distance from previous prime (249430003) and next prime (249430007).

It is not a de Polignac number, because 249430005 - 2¹ = 249430003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249430003) 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 71 ways as a sum of consecutive naturals, for example, 102250 + ... + 104660.

It is an arithmetic number, because the mean of its divisors is an integer number (6950580).

Almost surely, 2^249430005 is an apocalyptic number.

It is an amenable number.

249430005 is an abundant number, since it is smaller than the sum of its proper divisors (251011755).

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

249430005 is a wasteful number, since it uses less digits than its factorization.

249430005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463 (or 2449 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 249430005 is about 15793.3531905039. The cubic root of 249430005 is about 629.4813948278.

Adding to 249430005 its reverse (500034942), we get a palindrome (749464947).

The spelling of 249430005 in words is "two hundred forty-nine million, four hundred thirty thousand, five".