249388000005 has 16 divisors (see below), whose sum is σ = 401933363904. Its totient is φ = 132036078720.

The previous prime is 249387999997. The next prime is 249388000051. The reversal of 249388000005 is 500000883942.

It is a happy number.

It is not a de Polignac number, because 249388000005 - 2³ = 249387999997 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60676291 + ... + 60680400.

It is an arithmetic number, because the mean of its divisors is an integer number (25120835244).

Almost surely, 2^249388000005 is an apocalyptic number.

It is an amenable number.

249388000005 is a deficient number, since it is larger than the sum of its proper divisors (152545363899).

249388000005 is a wasteful number, since it uses less digits than its factorization.

249388000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121356836.

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 249388000005 its reverse (500000883942), we get a palindrome (749388883947).

The spelling of 249388000005 in words is "two hundred forty-nine billion, three hundred eighty-eight million, five", and thus it is an aban number.