7999221950 has 12 divisors (see below), whose sum is σ = 14878552920. Its totient is φ = 3199688760.

The previous prime is 7999221949. The next prime is 7999221983. The reversal of 7999221950 is 591229997.

It is a junction number, because it is equal to n+sod(n) for n = 7999221892 and 7999221901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79992170 + ... + 79992269.

It is an arithmetic number, because the mean of its divisors is an integer number (1239879410).

Almost surely, 2^7999221950 is an apocalyptic number.

7999221950 is a deficient number, since it is larger than the sum of its proper divisors (6879330970).

7999221950 is a wasteful number, since it uses less digits than its factorization.

7999221950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159984451 (or 159984446 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 7999221950 is about 89438.3695625094. The cubic root of 7999221950 is about 1999.9351603979.

The spelling of 7999221950 in words is "seven billion, nine hundred ninety-nine million, two hundred twenty-one thousand, nine hundred fifty".