212941989 has 24 divisors (see below), whose sum is σ = 331735040. Its totient is φ = 130846752.

The previous prime is 212941979. The next prime is 212941997. The reversal of 212941989 is 989149212.

212941989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212941989 - 2⁴ = 212941973 is a prime.

It is a super-2 number, since 2×212941989² = 90688581358552242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212941979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148932 + ... + 150354.

Almost surely, 2^212941989 is an apocalyptic number.

It is an amenable number.

212941989 is a deficient number, since it is larger than the sum of its proper divisors (118793051).

212941989 is a wasteful number, since it uses less digits than its factorization.

212941989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2718 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 212941989 is about 14592.5319598759. The cubic root of 212941989 is about 597.1550399918.

The spelling of 212941989 in words is "two hundred twelve million, nine hundred forty-one thousand, nine hundred eighty-nine".