2114991 has 10 divisors (see below), whose sum is σ = 3159552. Its totient is φ = 1409940.

The previous prime is 2114977. The next prime is 2115007. The reversal of 2114991 is 1994112.

It is not a de Polignac number, because 2114991 - 2²¹ = 17839 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2114951) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12975 + ... + 13136.

2^2114991 is an apocalyptic number.

2114991 is a deficient number, since it is larger than the sum of its proper divisors (1044561).

2114991 is an equidigital number, since it uses as much as digits as its factorization.

2114991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26123 (or 26114 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 2114991 is about 1454.3008629579. The cubic root of 2114991 is about 128.3619111410.

The spelling of 2114991 in words is "two million, one hundred fourteen thousand, nine hundred ninety-one".