9979228 has 24 divisors (see below), whose sum is σ = 20385792. Its totient is φ = 4185264.

The previous prime is 9979213. The next prime is 9979243. The reversal of 9979228 is 8229799.

It is an interprime number because it is at equal distance from previous prime (9979213) and next prime (9979243).

It is a d-powerful number, because it can be written as 9³ + 9⁷ + 7⁶ + 9⁷ + 2¹⁷ + 2¹⁷ + 8⁵ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2476 + ... + 5107.

It is an arithmetic number, because the mean of its divisors is an integer number (849408).

Almost surely, 2^9979228 is an apocalyptic number.

It is an amenable number.

9979228 is an abundant number, since it is smaller than the sum of its proper divisors (10406564).

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

9979228 is a wasteful number, since it uses less digits than its factorization.

9979228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641 (or 7639 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 9979228 is about 3158.9916112583. The cubic root of 9979228 is about 215.2941925385.

The spelling of 9979228 in words is "nine million, nine hundred seventy-nine thousand, two hundred twenty-eight".