8340491901 has 16 divisors (see below), whose sum is σ = 13147574400. Its totient is φ = 4601650368.

The previous prime is 8340491897. The next prime is 8340491917. The reversal of 8340491901 is 1091940438.

It is not a de Polignac number, because 8340491901 - 2² = 8340491897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8340491901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8340493901) 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 in 15 ways as a sum of consecutive naturals, for example, 6847086 + ... + 6848303.

It is an arithmetic number, because the mean of its divisors is an integer number (821723400).

Almost surely, 2^8340491901 is an apocalyptic number.

It is an amenable number.

8340491901 is a deficient number, since it is larger than the sum of its proper divisors (4807082499).

8340491901 is a wasteful number, since it uses less digits than its factorization.

8340491901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13695428.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 8340491901 is about 91326.2935906193. The cubic root of 8340491901 is about 2027.9810304335.

The spelling of 8340491901 in words is "eight billion, three hundred forty million, four hundred ninety-one thousand, nine hundred one".