7400821808 has 40 divisors (see below), whose sum is σ = 14841349200. Its totient is φ = 3570930944.

The previous prime is 7400821801. The next prime is 7400821819. The reversal of 7400821808 is 8081280047.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7400821801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347035 + ... + 1352517.

It is an arithmetic number, because the mean of its divisors is an integer number (371033730).

Almost surely, 2^7400821808 is an apocalyptic number.

It is an amenable number.

7400821808 is an abundant number, since it is smaller than the sum of its proper divisors (7440527392).

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

7400821808 is a wasteful number, since it uses less digits than its factorization.

7400821808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8429 (or 8423 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 7400821808 is about 86028.0291997905. The cubic root of 7400821808 is about 1948.7672952392.

The spelling of 7400821808 in words is "seven billion, four hundred million, eight hundred twenty-one thousand, eight hundred eight".