4021997340 has 24 divisors (see below), whose sum is σ = 11261592720. Its totient is φ = 1072532608.

The previous prime is 4021997339. The next prime is 4021997351. The reversal of 4021997340 is 437991204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33516585 + ... + 33516704.

It is an arithmetic number, because the mean of its divisors is an integer number (469233030).

Almost surely, 2^4021997340 is an apocalyptic number.

It is an amenable number.

4021997340 is an abundant number, since it is smaller than the sum of its proper divisors (7239595380).

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

4021997340 is a wasteful number, since it uses less digits than its factorization.

4021997340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67033301 (or 67033299 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 4021997340 is about 63419.2190112745. The cubic root of 4021997340 is about 1590.3056174523.

The spelling of 4021997340 in words is "four billion, twenty-one million, nine hundred ninety-seven thousand, three hundred forty".