9979229862 has 32 divisors (see below), whose sum is σ = 25344076800. Its totient is φ = 2851208424.

The previous prime is 9979229831. The next prime is 9979229863. The reversal of 9979229862 is 2689229799.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 9979229862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979229863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13199662 + ... + 13200417.

It is an arithmetic number, because the mean of its divisors is an integer number (792002400).

Almost surely, 2^9979229862 is an apocalyptic number.

9979229862 is an abundant number, since it is smaller than the sum of its proper divisors (15364846938).

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

9979229862 is a wasteful number, since it uses less digits than its factorization.

9979229862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26400097 (or 26400091 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 9979229862 is about 99896.0953290968. The cubic root of 9979229862 is about 2152.9420592887.

Subtracting from 9979229862 its sum of digits (63), we obtain a palindrome (9979229799).

The spelling of 9979229862 in words is "nine billion, nine hundred seventy-nine million, two hundred twenty-nine thousand, eight hundred sixty-two".