800491405 has 8 divisors (see below), whose sum is σ = 1097816832. Its totient is φ = 548908368.

The previous prime is 800491399. The next prime is 800491423. The reversal of 800491405 is 504194008.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 800491405 - 2¹¹ = 800489357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11435557 + ... + 11435626.

It is an arithmetic number, because the mean of its divisors is an integer number (137227104).

Almost surely, 2^800491405 is an apocalyptic number.

It is an amenable number.

800491405 is a deficient number, since it is larger than the sum of its proper divisors (297325427).

800491405 is a wasteful number, since it uses less digits than its factorization.

800491405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22871195.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 800491405 is about 28292.9568090718. The cubic root of 800491405 is about 928.5078028143.

The spelling of 800491405 in words is "eight hundred million, four hundred ninety-one thousand, four hundred five".