9021009979 has 2 divisors, whose sum is σ = 9021009980. Its totient is φ = 9021009978.

The previous prime is 9021009937. The next prime is 9021009983. The reversal of 9021009979 is 9799001209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9021009979 - 2²⁷ = 8886792251 is a prime.

It is not a weakly prime, because it can be changed into another prime (9021009919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4510504989 + 4510504990.

It is an arithmetic number, because the mean of its divisors is an integer number (4510504990).

Almost surely, 2^9021009979 is an apocalyptic number.

9021009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9021009979 is an equidigital number, since it uses as much as digits as its factorization.

9021009979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 9021009979 is about 94978.9975678834. The cubic root of 9021009979 is about 2081.7011769214.

The spelling of 9021009979 in words is "nine billion, twenty-one million, nine thousand, nine hundred seventy-nine".