979900 has 36 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 380800.

The previous prime is 979889. The next prime is 979907. The reversal of 979900 is 9979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979907) by changing a digit.

979900 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3981 + ... + 4219.

It is an arithmetic number, because the mean of its divisors is an integer number (60760).

2⁹⁷⁹⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093680).

979900 is an abundant number, since it is smaller than the sum of its proper divisors (1207460).

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

979900 is a wasteful number, since it uses less digits than its factorization.

979900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 979900 is about 989.8989847454. The cubic root of 979900 is about 99.3254601911.

The spelling of 979900 in words is "nine hundred seventy-nine thousand, nine hundred".