9880454491 has 2 divisors, whose sum is σ = 9880454492. Its totient is φ = 9880454490.

The previous prime is 9880454489. The next prime is 9880454567. The reversal of 9880454491 is 1944540889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9880454491 - 2¹ = 9880454489 is a prime.

Together with 9880454489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9880458491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4940227245 + 4940227246.

It is an arithmetic number, because the mean of its divisors is an integer number (4940227246).

Almost surely, 2^9880454491 is an apocalyptic number.

9880454491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9880454491 is an equidigital number, since it uses as much as digits as its factorization.

9880454491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 9880454491 is about 99400.4753057047. The cubic root of 9880454491 is about 2145.8151509419.

The spelling of 9880454491 in words is "nine billion, eight hundred eighty million, four hundred fifty-four thousand, four hundred ninety-one".