4271890391 has 2 divisors, whose sum is σ = 4271890392. Its totient is φ = 4271890390.

The previous prime is 4271890387. The next prime is 4271890393. The reversal of 4271890391 is 1930981724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4271890391 - 2² = 4271890387 is a prime.

Together with 4271890393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4271890393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2135945195 + 2135945196.

It is an arithmetic number, because the mean of its divisors is an integer number (2135945196).

Almost surely, 2^4271890391 is an apocalyptic number.

4271890391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4271890391 is an equidigital number, since it uses as much as digits as its factorization.

4271890391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 4271890391 is about 65359.7000528613. The cubic root of 4271890391 is about 1622.5821735949.

The spelling of 4271890391 in words is "four billion, two hundred seventy-one million, eight hundred ninety thousand, three hundred ninety-one".