2911389 has 16 divisors (see below), whose sum is σ = 4401600. Its totient is φ = 1696896.

The previous prime is 2911379. The next prime is 2911393. The reversal of 2911389 is 9831192.

It is not a de Polignac number, because 2911389 - 2⁴ = 2911373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2911309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1224 + ... + 2705.

It is an arithmetic number, because the mean of its divisors is an integer number (275100).

2^2911389 is an apocalyptic number.

It is an amenable number.

2911389 is a deficient number, since it is larger than the sum of its proper divisors (1490211).

2911389 is a wasteful number, since it uses less digits than its factorization.

2911389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964.

The product of its digits is 3888, while the sum is 33.

The square root of 2911389 is about 1706.2792854630. The cubic root of 2911389 is about 142.7907513881.

The spelling of 2911389 in words is "two million, nine hundred eleven thousand, three hundred eighty-nine".