4023909121 has 2 divisors, whose sum is σ = 4023909122. Its totient is φ = 4023909120.

The previous prime is 4023909119. The next prime is 4023909143. The reversal of 4023909121 is 1219093204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3999297600 + 24611521 = 63240^2 + 4961^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023909121 - 2¹ = 4023909119 is a prime.

It is a super-2 number, since 2×4023909121² = 32383689228133985282, which contains 22 as substring.

Together with 4023909119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4023909521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011954560 + 2011954561.

It is an arithmetic number, because the mean of its divisors is an integer number (2011954561).

Almost surely, 2^4023909121 is an apocalyptic number.

It is an amenable number.

4023909121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4023909121 is an equidigital number, since it uses as much as digits as its factorization.

4023909121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 4023909121 is about 63434.2897887255. The cubic root of 4023909121 is about 1590.5575515218.

The spelling of 4023909121 in words is "four billion, twenty-three million, nine hundred nine thousand, one hundred twenty-one".