2129487 has 16 divisors (see below), whose sum is σ = 2954880. Its totient is φ = 1363232.

The previous prime is 2129473. The next prime is 2129497. The reversal of 2129487 is 7849212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2129487 - 2⁶ = 2129423 is a prime.

2129487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129447) 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, 9268 + ... + 9494.

It is an arithmetic number, because the mean of its divisors is an integer number (184680).

2^2129487 is an apocalyptic number.

2129487 is a deficient number, since it is larger than the sum of its proper divisors (825393).

2129487 is a wasteful number, since it uses less digits than its factorization.

2129487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 8064, while the sum is 33.

The square root of 2129487 is about 1459.2761904451. The cubic root of 2129487 is about 128.6545048626.

The spelling of 2129487 in words is "two million, one hundred twenty-nine thousand, four hundred eighty-seven".