2891429 has 2 divisors, whose sum is σ = 2891430. Its totient is φ = 2891428.

The previous prime is 2891419. The next prime is 2891431. The reversal of 2891429 is 9241982.

2891429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 1214404 = 1295^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 2891429 - 2¹² = 2887333 is a prime.

Together with 2891431, 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 (2891419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445714 + 1445715.

It is an arithmetic number, because the mean of its divisors is an integer number (1445715).

2^2891429 is an apocalyptic number.

It is an amenable number.

2891429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891429 is an equidigital number, since it uses as much as digits as its factorization.

2891429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 2891429 is about 1700.4202421754. The cubic root of 2891429 is about 142.4636862429.

The spelling of 2891429 in words is "two million, eight hundred ninety-one thousand, four hundred twenty-nine".