212089988 has 12 divisors (see below), whose sum is σ = 404899152. Its totient is φ = 96404520.

The previous prime is 212089987. The next prime is 212090023. The reversal of 212089988 is 889980212.

It is not an unprimeable number, because it can be changed into a prime (212089981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410070 + ... + 2410157.

It is an arithmetic number, because the mean of its divisors is an integer number (33741596).

Almost surely, 2^212089988 is an apocalyptic number.

It is an amenable number.

212089988 is a deficient number, since it is larger than the sum of its proper divisors (192809164).

212089988 is a wasteful number, since it uses less digits than its factorization.

212089988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4820242 (or 4820240 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 212089988 is about 14563.3096513121. The cubic root of 212089988 is about 596.3575508720.

The spelling of 212089988 in words is "two hundred twelve million, eighty-nine thousand, nine hundred eighty-eight".