2091464 has 8 divisors (see below), whose sum is σ = 3921510. Its totient is φ = 1045728.

The previous prime is 2091461. The next prime is 2091473. The reversal of 2091464 is 4641902.

It can be written as a sum of positive squares in only one way, i.e., 2079364 + 12100 = 1442^2 + 110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2091461) 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 as a sum of consecutive naturals, namely, 130709 + ... + 130724.

2^2091464 is an apocalyptic number.

It is an amenable number.

2091464 is a deficient number, since it is larger than the sum of its proper divisors (1830046).

2091464 is a wasteful number, since it uses less digits than its factorization.

2091464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261439 (or 261435 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2091464 is about 1446.1894758295. The cubic root of 2091464 is about 127.8841725629.

The spelling of 2091464 in words is "two million, ninety-one thousand, four hundred sixty-four".