200989639 has 4 divisors (see below), whose sum is σ = 201225024. Its totient is φ = 200754256.

The previous prime is 200989627. The next prime is 200989643. The reversal of 200989639 is 936989002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200989639 - 2⁷ = 200989511 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 (200989669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116407 + ... + 118120.

It is an arithmetic number, because the mean of its divisors is an integer number (50306256).

Almost surely, 2^200989639 is an apocalyptic number.

200989639 is a deficient number, since it is larger than the sum of its proper divisors (235385).

200989639 is an equidigital number, since it uses as much as digits as its factorization.

200989639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235384.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 200989639 is about 14177.0814697525. The cubic root of 200989639 is about 585.7665350318.

The spelling of 200989639 in words is "two hundred million, nine hundred eighty-nine thousand, six hundred thirty-nine".