4021456468 has 6 divisors (see below), whose sum is σ = 7037548826. Its totient is φ = 2010728232.

The previous prime is 4021456447. The next prime is 4021456499. The reversal of 4021456468 is 8646541204.

It can be written as a sum of positive squares in only one way, i.e., 2639698884 + 1381757584 = 51378^2 + 37172^2 .

It is a super-2 number, since 2×4021456468² = 32344224248038070048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4021456468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502682055 + ... + 502682062.

Almost surely, 2^4021456468 is an apocalyptic number.

It is an amenable number.

4021456468 is a deficient number, since it is larger than the sum of its proper divisors (3016092358).

4021456468 is a wasteful number, since it uses less digits than its factorization.

4021456468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005364121 (or 1005364119 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 4021456468 is about 63414.9546085149. The cubic root of 4021456468 is about 1590.2343269742.

The spelling of 4021456468 in words is "four billion, twenty-one million, four hundred fifty-six thousand, four hundred sixty-eight".