808747491 has 8 divisors (see below), whose sum is σ = 1089447184. Its totient is φ = 533606400.

The previous prime is 808747481. The next prime is 808747519. The reversal of 808747491 is 194747808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 808747491 - 2⁹ = 808746979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 808747491.

It is not an unprimeable number, because it can be changed into a prime (808747421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1389310 + ... + 1389891.

It is an arithmetic number, because the mean of its divisors is an integer number (136180898).

Almost surely, 2^808747491 is an apocalyptic number.

808747491 is a deficient number, since it is larger than the sum of its proper divisors (280699693).

808747491 is a wasteful number, since it uses less digits than its factorization.

808747491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779301.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 808747491 is about 28438.4860883979. The cubic root of 808747491 is about 931.6890302558.

The spelling of 808747491 in words is "eight hundred eight million, seven hundred forty-seven thousand, four hundred ninety-one".