2913889 has 4 divisors (see below), whose sum is σ = 3178800. Its totient is φ = 2648980.

The previous prime is 2913871. The next prime is 2913913. The reversal of 2913889 is 9883192.

2913889 = 281² + 282² + ... + 313².

2913889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2913889 - 2⁹ = 2913377 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2910889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132439 + ... + 132460.

It is an arithmetic number, because the mean of its divisors is an integer number (794700).

2^2913889 is an apocalyptic number.

It is an amenable number.

2913889 is a deficient number, since it is larger than the sum of its proper divisors (264911).

2913889 is a wasteful number, since it uses less digits than its factorization.

2913889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264910.

The product of its digits is 31104, while the sum is 40.

The square root of 2913889 is about 1707.0117164214. The cubic root of 2913889 is about 142.8316110086.

Subtracting from 2913889 its sum of digits (40), we obtain a square (2913849 = 1707²).

The spelling of 2913889 in words is "two million, nine hundred thirteen thousand, eight hundred eighty-nine".