212872489 has 8 divisors (see below), whose sum is σ = 218926400. Its totient is φ = 206868816.

The previous prime is 212872483. The next prime is 212872501. The reversal of 212872489 is 984278212.

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 212872489 - 2³ = 212872481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212872481) 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, 3882 + ... + 20995.

It is an arithmetic number, because the mean of its divisors is an integer number (27365800).

Almost surely, 2^212872489 is an apocalyptic number.

It is an amenable number.

212872489 is a deficient number, since it is larger than the sum of its proper divisors (6053911).

212872489 is a wasteful number, since it uses less digits than its factorization.

212872489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25119.

The product of its digits is 129024, while the sum is 43.

The square root of 212872489 is about 14590.1504104653. The cubic root of 212872489 is about 597.0900664412.

The spelling of 212872489 in words is "two hundred twelve million, eight hundred seventy-two thousand, four hundred eighty-nine".