979459440 has 80 divisors (see below), whose sum is σ = 3067699488. Its totient is φ = 258490368.

The previous prime is 979459421. The next prime is 979459441. The reversal of 979459440 is 44954979.

It is a happy number.

979459440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×979459440² = 1918681589210227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979459441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2244 + ... + 44316.

Almost surely, 2^979459440 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 979459440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533849744).

979459440 is an abundant number, since it is smaller than the sum of its proper divisors (2088240048).

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

979459440 is a wasteful number, since it uses less digits than its factorization.

979459440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42186 (or 42180 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 979459440 is about 31296.3167161888. The cubic root of 979459440 is about 993.1057248677.

The spelling of 979459440 in words is "nine hundred seventy-nine million, four hundred fifty-nine thousand, four hundred forty".