2214891 has 16 divisors (see below), whose sum is σ = 3750400. Its totient is φ = 1265544.

The previous prime is 2214869. The next prime is 2214907. The reversal of 2214891 is 1984122.

It is not a de Polignac number, because 2214891 - 2⁶ = 2214827 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 (2214491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5671 + ... + 6048.

It is an arithmetic number, because the mean of its divisors is an integer number (234400).

2^2214891 is an apocalyptic number.

2214891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2214891 is a deficient number, since it is larger than the sum of its proper divisors (1535509).

2214891 is a wasteful number, since it uses less digits than its factorization.

2214891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11735 (or 11729 counting only the distinct ones).

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

The square root of 2214891 is about 1488.2509868970. The cubic root of 2214891 is about 130.3519261171.

The spelling of 2214891 in words is "two million, two hundred fourteen thousand, eight hundred ninety-one".