213641989 has 8 divisors (see below), whose sum is σ = 234550368. Its totient is φ = 192981360.

The previous prime is 213641971. The next prime is 213641999. The reversal of 213641989 is 989146312.

It is a happy number.

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

It is not a de Polignac number, because 213641989 - 2⁵ = 213641957 is a prime.

It is a super-2 number, since 2×213641989² = 91285798927752242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213641999) 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, 60127 + ... + 63580.

It is an arithmetic number, because the mean of its divisors is an integer number (29318796).

Almost surely, 2^213641989 is an apocalyptic number.

It is an amenable number.

213641989 is a deficient number, since it is larger than the sum of its proper divisors (20908379).

213641989 is a wasteful number, since it uses less digits than its factorization.

213641989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123875.

The product of its digits is 93312, while the sum is 43.

The square root of 213641989 is about 14616.4971521907. The cubic root of 213641989 is about 597.8086629614.

The spelling of 213641989 in words is "two hundred thirteen million, six hundred forty-one thousand, nine hundred eighty-nine".