7221899408 has 40 divisors (see below), whose sum is σ = 14366642976. Its totient is φ = 3514784000.

The previous prime is 7221899401. The next prime is 7221899413. The reversal of 7221899408 is 8049981227.

It is not an unprimeable number, because it can be changed into a prime (7221899401) 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, 278183 + ... + 303033.

Almost surely, 2^7221899408 is an apocalyptic number.

It is an amenable number.

7221899408 is a deficient number, since it is larger than the sum of its proper divisors (7144743568).

7221899408 is a wasteful number, since it uses less digits than its factorization.

7221899408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25343 (or 25337 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 7221899408 is about 84981.7592663273. The cubic root of 7221899408 is about 1932.9345326719.

The spelling of 7221899408 in words is "seven billion, two hundred twenty-one million, eight hundred ninety-nine thousand, four hundred eight".