8405249244 has 24 divisors (see below), whose sum is σ = 22413998208. Its totient is φ = 2401499760.

The previous prime is 8405249233. The next prime is 8405249261. The reversal of 8405249244 is 4429425048.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 8405249196 and 8405249205.

It is a congruent number.

It is an unprimeable number.

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, 50031162 + ... + 50031329.

It is an arithmetic number, because the mean of its divisors is an integer number (933916592).

Almost surely, 2^8405249244 is an apocalyptic number.

8405249244 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

8405249244 is an abundant number, since it is smaller than the sum of its proper divisors (14008748964).

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

8405249244 is a wasteful number, since it uses less digits than its factorization.

8405249244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100062505 (or 100062503 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The square root of 8405249244 is about 91680.1464004067. The cubic root of 8405249244 is about 2033.2160629551.

The spelling of 8405249244 in words is "eight billion, four hundred five million, two hundred forty-nine thousand, two hundred forty-four".