477991022209 has 4 divisors (see below), whose sum is σ = 482918764804. Its totient is φ = 473063279616.

The previous prime is 477991022207. The next prime is 477991022219. The reversal of 477991022209 is 902220199774.

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 153037440000 + 324953582209 = 391200^2 + 570047^2 .

It is a cyclic number.

It is not a de Polignac number, because 477991022209 - 2¹ = 477991022207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (477991022207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2463871152 + ... + 2463871345.

It is an arithmetic number, because the mean of its divisors is an integer number (120729691201).

Almost surely, 2^477991022209 is an apocalyptic number.

It is an amenable number.

477991022209 is a deficient number, since it is larger than the sum of its proper divisors (4927742595).

477991022209 is an equidigital number, since it uses as much as digits as its factorization.

477991022209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927742594.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 477991022209 in words is "four hundred seventy-seven billion, nine hundred ninety-one million, twenty-two thousand, two hundred nine".