8070000921 has 40 divisors (see below), whose sum is σ = 12433488584. Its totient is φ = 5212408320.

The previous prime is 8070000907. The next prime is 8070000923. The reversal of 8070000921 is 1290000708.

It can be written as a sum of positive squares in 4 ways, for example, as 3640432896 + 4429568025 = 60336^2 + 66555^2 .

It is not a de Polignac number, because 8070000921 - 2¹⁷ = 8069869849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8070000923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 716691 + ... + 727863.

Almost surely, 2^8070000921 is an apocalyptic number.

8070000921 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8070000921 is a deficient number, since it is larger than the sum of its proper divisors (4363487663).

8070000921 is a wasteful number, since it uses less digits than its factorization.

8070000921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11463 (or 11454 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 8070000921 is about 89833.1838520711. The cubic root of 8070000921 is about 2005.8164779770.

The spelling of 8070000921 in words is "eight billion, seventy million, nine hundred twenty-one", and thus it is an aban number.