2891396 has 6 divisors (see below), whose sum is σ = 5059950. Its totient is φ = 1445696.

The previous prime is 2891389. The next prime is 2891407. The reversal of 2891396 is 6931982.

It can be written as a sum of positive squares in only one way, i.e., 2768896 + 122500 = 1664^2 + 350^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361421 + ... + 361428.

It is an arithmetic number, because the mean of its divisors is an integer number (843325).

2^2891396 is an apocalyptic number.

It is an amenable number.

2891396 is a deficient number, since it is larger than the sum of its proper divisors (2168554).

2891396 is a wasteful number, since it uses less digits than its factorization.

2891396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722853 (or 722851 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 2891396 is about 1700.4105386641. The cubic root of 2891396 is about 142.4631442595.

The spelling of 2891396 in words is "two million, eight hundred ninety-one thousand, three hundred ninety-six".