4020876591 has 4 divisors (see below), whose sum is σ = 5361168792. Its totient is φ = 2680584392.

The previous prime is 4020876571. The next prime is 4020876599. The reversal of 4020876591 is 1956780204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4020876591 - 2⁶ = 4020876527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020876599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670146096 + ... + 670146101.

It is an arithmetic number, because the mean of its divisors is an integer number (1340292198).

Almost surely, 2^4020876591 is an apocalyptic number.

4020876591 is a deficient number, since it is larger than the sum of its proper divisors (1340292201).

4020876591 is a wasteful number, since it uses less digits than its factorization.

4020876591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340292200.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 4020876591 is about 63410.3823596736. The cubic root of 4020876591 is about 1590.1578882805.

The spelling of 4020876591 in words is "four billion, twenty million, eight hundred seventy-six thousand, five hundred ninety-one".