4221007992 has 48 divisors (see below), whose sum is σ = 11473221240. Its totient is φ = 1401916608.

The previous prime is 4221007991. The next prime is 4221007997. The reversal of 4221007992 is 2997001224.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221007991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85878 + ... + 125765.

Almost surely, 2^4221007992 is an apocalyptic number.

It is an amenable number.

4221007992 is an abundant number, since it is smaller than the sum of its proper divisors (7252213248).

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

4221007992 is a wasteful number, since it uses less digits than its factorization.

4221007992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211932 (or 211925 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 4221007992 is about 64969.2849891393. The cubic root of 4221007992 is about 1616.1142444066.

The spelling of 4221007992 in words is "four billion, two hundred twenty-one million, seven thousand, nine hundred ninety-two".