4020333091 has 2 divisors, whose sum is σ = 4020333092. Its totient is φ = 4020333090.

The previous prime is 4020333061. The next prime is 4020333113. The reversal of 4020333091 is 1903330204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4020333091 - 2⁵ = 4020333059 is a prime.

It is a super-2 number, since 2×4020333091² = 32326156325179228562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4020333061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010166545 + 2010166546.

It is an arithmetic number, because the mean of its divisors is an integer number (2010166546).

Almost surely, 2^4020333091 is an apocalyptic number.

4020333091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020333091 is an equidigital number, since it uses as much as digits as its factorization.

4020333091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 4020333091 is about 63406.0966390457. The cubic root of 4020333091 is about 1590.0862380872.

Adding to 4020333091 its reverse (1903330204), we get a palindrome (5923663295).

The spelling of 4020333091 in words is "four billion, twenty million, three hundred thirty-three thousand, ninety-one".