9877212 has 72 divisors (see below), whose sum is σ = 26557440. Its totient is φ = 3088800.

The previous prime is 9877211. The next prime is 9877213. The reversal of 9877212 is 2127789.

It is an interprime number because it is at equal distance from previous prime (9877211) and next prime (9877213).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9877211) 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, 65337 + ... + 65487.

Almost surely, 2^9877212 is an apocalyptic number.

9877212 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9877212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13278720).

9877212 is an abundant number, since it is smaller than the sum of its proper divisors (16680228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9877212 is a wasteful number, since it uses less digits than its factorization.

9877212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 258 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 9877212 is about 3142.8032073294. The cubic root of 9877212 is about 214.5580392930.

The spelling of 9877212 in words is "nine million, eight hundred seventy-seven thousand, two hundred twelve".