4027039921 has 2 divisors, whose sum is σ = 4027039922. Its totient is φ = 4027039920.

The previous prime is 4027039901. The next prime is 4027039979. The reversal of 4027039921 is 1299307204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3708810000 + 318229921 = 60900^2 + 17839^2 .

It is a cyclic number.

It is not a de Polignac number, because 4027039921 - 2⁹ = 4027039409 is a prime.

It is not a weakly prime, because it can be changed into another prime (4027039901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2013519960 + 2013519961.

It is an arithmetic number, because the mean of its divisors is an integer number (2013519961).

Almost surely, 2^4027039921 is an apocalyptic number.

It is an amenable number.

4027039921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4027039921 is an equidigital number, since it uses as much as digits as its factorization.

4027039921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 4027039921 is about 63458.9624954584. The cubic root of 4027039921 is about 1590.9699553561.

The spelling of 4027039921 in words is "four billion, twenty-seven million, thirty-nine thousand, nine hundred twenty-one".