8914905991 has 2 divisors, whose sum is σ = 8914905992. Its totient is φ = 8914905990.

The previous prime is 8914905983. The next prime is 8914906093. The reversal of 8914905991 is 1995094198.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8914905991 - 2³ = 8914905983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8914905931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4457452995 + 4457452996.

It is an arithmetic number, because the mean of its divisors is an integer number (4457452996).

Almost surely, 2^8914905991 is an apocalyptic number.

8914905991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8914905991 is an equidigital number, since it uses as much as digits as its factorization.

8914905991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 55.

The square root of 8914905991 is about 94418.7798639656. The cubic root of 8914905991 is about 2073.5073983373.

The spelling of 8914905991 in words is "eight billion, nine hundred fourteen million, nine hundred five thousand, nine hundred ninety-one".