4200989 has 8 divisors (see below), whose sum is σ = 4790520. Its totient is φ = 3649536.

The previous prime is 4200953. The next prime is 4200991. The reversal of 4200989 is 9890024.

It can be written as a sum of positive squares in 4 ways, for example, as 1085764 + 3115225 = 1042^2 + 1765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4200989 - 2⁸ = 4200733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9284 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (598815).

Almost surely, 2^4200989 is an apocalyptic number.

It is an amenable number.

4200989 is a deficient number, since it is larger than the sum of its proper divisors (589531).

4200989 is a wasteful number, since it uses less digits than its factorization.

4200989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19039.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 4200989 is about 2049.6314302820. The cubic root of 4200989 is about 161.3555277429.

The spelling of 4200989 in words is "four million, two hundred thousand, nine hundred eighty-nine".