7904489076 has 108 divisors (see below), whose sum is σ = 22210215300. Its totient is φ = 2368270080.

The previous prime is 7904489071. The next prime is 7904489077. The reversal of 7904489076 is 6709844097.

It is a happy number.

7904489076 is a `hidden beast` number, since 7 + 90 + 4 + 489 + 0 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4903640676 + 3000848400 = 70026^2 + 54780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904489071) 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 35 ways as a sum of consecutive naturals, for example, 377490 + ... + 397878.

Almost surely, 2^7904489076 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 7904489076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11105107650).

7904489076 is an abundant number, since it is smaller than the sum of its proper divisors (14305726224).

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

7904489076 is a wasteful number, since it uses less digits than its factorization.

7904489076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20510 (or 20494 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 7904489076 is about 88907.1936122157. The cubic root of 7904489076 is about 1992.0088697771.

The spelling of 7904489076 in words is "seven billion, nine hundred four million, four hundred eighty-nine thousand, seventy-six".