8942002921 has 2 divisors, whose sum is σ = 8942002922. Its totient is φ = 8942002920.

The previous prime is 8942002919. The next prime is 8942002939. The reversal of 8942002921 is 1292002498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8940648025 + 1354896 = 94555^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 8942002921 - 2¹ = 8942002919 is a prime.

Together with 8942002919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8942002621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4471001460 + 4471001461.

It is an arithmetic number, because the mean of its divisors is an integer number (4471001461).

Almost surely, 2^8942002921 is an apocalyptic number.

It is an amenable number.

8942002921 is a deficient number, since it is larger than the sum of its proper divisors (1).

8942002921 is an equidigital number, since it uses as much as digits as its factorization.

8942002921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 8942002921 is about 94562.1643206203. The cubic root of 8942002921 is about 2075.6060877009.

The spelling of 8942002921 in words is "eight billion, nine hundred forty-two million, two thousand, nine hundred twenty-one".