4212891 has 14 divisors (see below), whose sum is σ = 6317540. Its totient is φ = 2808108.

The previous prime is 4212883. The next prime is 4212907. The reversal of 4212891 is 1982124.

It is not a de Polignac number, because 4212891 - 2³ = 4212883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4212881) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2161 + ... + 3618.

Almost surely, 2^4212891 is an apocalyptic number.

4212891 is a deficient number, since it is larger than the sum of its proper divisors (2104649).

4212891 is an frugal number, since it uses more digits than its factorization.

4212891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797 (or 5782 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 4212891 is about 2052.5328255597. The cubic root of 4212891 is about 161.5077651249.

The spelling of 4212891 in words is "four million, two hundred twelve thousand, eight hundred ninety-one".