3909229481 has 2 divisors, whose sum is σ = 3909229482. Its totient is φ = 3909229480.

The previous prime is 3909229439. The next prime is 3909229483. The reversal of 3909229481 is 1849229093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2781613081 + 1127616400 = 52741^2 + 33580^2 .

It is a cyclic number.

It is not a de Polignac number, because 3909229481 - 2⁶ = 3909229417 is a prime.

It is a super-2 number, since 2×3909229481² = 30564150270239058722, which contains 22 as substring.

Together with 3909229483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3909229483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954614740 + 1954614741.

It is an arithmetic number, because the mean of its divisors is an integer number (1954614741).

Almost surely, 2^3909229481 is an apocalyptic number.

It is an amenable number.

3909229481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909229481 is an equidigital number, since it uses as much as digits as its factorization.

3909229481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 3909229481 is about 62523.8313045514. The cubic root of 3909229481 is about 1575.3016277612.

The spelling of 3909229481 in words is "three billion, nine hundred nine million, two hundred twenty-nine thousand, four hundred eighty-one".