2139464 has 8 divisors (see below), whose sum is σ = 4011510. Its totient is φ = 1069728.

The previous prime is 2139463. The next prime is 2139481. The reversal of 2139464 is 4649312.

2139464 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 1020100 = 1058^2 + 1010^2 .

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 (2139461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133709 + ... + 133724.

2^2139464 is an apocalyptic number.

It is an amenable number.

2139464 is a deficient number, since it is larger than the sum of its proper divisors (1872046).

2139464 is a wasteful number, since it uses less digits than its factorization.

2139464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267439 (or 267435 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 2139464 is about 1462.6906713314. The cubic root of 2139464 is about 128.8551144604.

The spelling of 2139464 in words is "two million, one hundred thirty-nine thousand, four hundred sixty-four".