7976421000 has 512 divisors, whose sum is σ = 29248128000. Its totient is φ = 2007936000.

The previous prime is 7976420981. The next prime is 7976421017. The reversal of 7976421000 is 1246797.

It is a happy number.

7976421000 is a `hidden beast` number, since 7 + 9 + 7 + 642 + 1 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 47762917 + ... + 47763083.

It is an arithmetic number, because the mean of its divisors is an integer number (57125250).

Almost surely, 2^7976421000 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 7976421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14624064000).

7976421000 is an abundant number, since it is smaller than the sum of its proper divisors (21271707000).

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

7976421000 is a wasteful number, since it uses less digits than its factorization.

7976421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 7976421000 is about 89310.8112156641. The cubic root of 7976421000 is about 1998.0331497174.

Adding to 7976421000 its reverse (1246797), we get a palindrome (7977667797).

The spelling of 7976421000 in words is "seven billion, nine hundred seventy-six million, four hundred twenty-one thousand".