828495905 has 4 divisors (see below), whose sum is σ = 994195092. Its totient is φ = 662796720.

The previous prime is 828495887. The next prime is 828495919. The reversal of 828495905 is 509594828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 453221521 + 375274384 = 21289^2 + 19372^2 .

It is a de Polignac number, because none of the positive numbers 2^k-828495905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82849586 + ... + 82849595.

It is an arithmetic number, because the mean of its divisors is an integer number (248548773).

Almost surely, 2^828495905 is an apocalyptic number.

It is an amenable number.

828495905 is a deficient number, since it is larger than the sum of its proper divisors (165699187).

828495905 is a wasteful number, since it uses less digits than its factorization.

828495905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165699186.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The square root of 828495905 is about 28783.6047950913. The cubic root of 828495905 is about 939.2116163885.

The spelling of 828495905 in words is "eight hundred twenty-eight million, four hundred ninety-five thousand, nine hundred five".