8434891 has 2 divisors, whose sum is σ = 8434892. Its totient is φ = 8434890.

The previous prime is 8434861. The next prime is 8434901. The reversal of 8434891 is 1984348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8434891 - 2⁷ = 8434763 is a prime.

It is a super-2 number, since 2×8434891² = 142294772363762, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8434891.

It is not a weakly prime, because it can be changed into another prime (8434861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217445 + 4217446.

It is an arithmetic number, because the mean of its divisors is an integer number (4217446).

Almost surely, 2^8434891 is an apocalyptic number.

8434891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434891 is an equidigital number, since it uses as much as digits as its factorization.

8434891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 8434891 is about 2904.2883809980. The cubic root of 8434891 is about 203.5603356279.

The spelling of 8434891 in words is "eight million, four hundred thirty-four thousand, eight hundred ninety-one".