8479201021 has 6 divisors (see below), whose sum is σ = 8691056666. Its totient is φ = 8272389600.

The previous prime is 8479201009. The next prime is 8479201037. The reversal of 8479201021 is 1201029748.

It can be written as a sum of positive squares in 3 ways, for example, as 13176900 + 8466024121 = 3630^2 + 92011^2 .

It is not a de Polignac number, because 8479201021 - 2¹⁵ = 8479168253 is a prime.

It is a super-3 number, since 3×8479201021³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479211021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2520390 + ... + 2523751.

Almost surely, 2^8479201021 is an apocalyptic number.

It is an amenable number.

8479201021 is a deficient number, since it is larger than the sum of its proper divisors (211855645).

8479201021 is an equidigital number, since it uses as much as digits as its factorization.

8479201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044223 (or 5044182 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 8479201021 is about 92082.5771848291. The cubic root of 8479201021 is about 2039.1615980819.

The spelling of 8479201021 in words is "eight billion, four hundred seventy-nine million, two hundred one thousand, twenty-one".