7004454921 has 24 divisors (see below), whose sum is σ = 10155881736. Its totient is φ = 4651983360.

The previous prime is 7004454917. The next prime is 7004454953. The reversal of 7004454921 is 1294544007.

It is a happy number.

7004454921 is a `hidden beast` number, since 70 + 0 + 44 + 549 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 920454921 + 6084000000 = 30339^2 + 78000^2 .

It is not a de Polignac number, because 7004454921 - 2² = 7004454917 is a prime.

It is a super-2 number, since 2×7004454921² = 98124777480642232482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7004454221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3270511 + ... + 3272651.

It is an arithmetic number, because the mean of its divisors is an integer number (423161739).

Almost surely, 2^7004454921 is an apocalyptic number.

It is an amenable number.

7004454921 is a deficient number, since it is larger than the sum of its proper divisors (3151426815).

7004454921 is a wasteful number, since it uses less digits than its factorization.

7004454921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7004454921 is about 83692.6216640392. The cubic root of 7004454921 is about 1913.3369042055.

Adding to 7004454921 its reverse (1294544007), we get a palindrome (8298998928).

The spelling of 7004454921 in words is "seven billion, four million, four hundred fifty-four thousand, nine hundred twenty-one".