4189540 has 12 divisors (see below), whose sum is σ = 8798076. Its totient is φ = 1675808.

The previous prime is 4189517. The next prime is 4189553. The reversal of 4189540 is 459814.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 2184484 = 1416^2 + 1478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104719 + ... + 104758.

It is an arithmetic number, because the mean of its divisors is an integer number (733173).

Almost surely, 2^4189540 is an apocalyptic number.

It is an amenable number.

4189540 is an abundant number, since it is smaller than the sum of its proper divisors (4608536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4189540 is a wasteful number, since it uses less digits than its factorization.

4189540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209486 (or 209484 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4189540 is about 2046.8365836090. The cubic root of 4189540 is about 161.2088130691.

The spelling of 4189540 in words is "four million, one hundred eighty-nine thousand, five hundred forty".