817279485 has 16 divisors (see below), whose sum is σ = 1426524480. Its totient is φ = 396256640.

The previous prime is 817279469. The next prime is 817279499. The reversal of 817279485 is 584972718.

It is not a de Polignac number, because 817279485 - 2⁴ = 817279469 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2476440 + ... + 2476769.

It is an arithmetic number, because the mean of its divisors is an integer number (89157780).

Almost surely, 2^817279485 is an apocalyptic number.

It is an amenable number.

817279485 is a deficient number, since it is larger than the sum of its proper divisors (609244995).

817279485 is a wasteful number, since it uses less digits than its factorization.

817279485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953228.

The product of its digits is 1128960, while the sum is 51.

The square root of 817279485 is about 28588.1004090863. The cubic root of 817279485 is about 934.9539035678.

The spelling of 817279485 in words is "eight hundred seventeen million, two hundred seventy-nine thousand, four hundred eighty-five".