399084008473 has 4 divisors (see below), whose sum is σ = 400031951908. Its totient is φ = 398136065040.

The previous prime is 399084008459. The next prime is 399084008497. The reversal of 399084008473 is 374800480993.

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 128947064464 + 270136944009 = 359092^2 + 519747^2 .

It is a cyclic number.

It is not a de Polignac number, because 399084008473 - 2⁵ = 399084008441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399084008413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473971086 + ... + 473971927.

It is an arithmetic number, because the mean of its divisors is an integer number (100007987977).

Almost surely, 2^399084008473 is an apocalyptic number.

It is an amenable number.

399084008473 is a deficient number, since it is larger than the sum of its proper divisors (947943435).

399084008473 is an equidigital number, since it uses as much as digits as its factorization.

399084008473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947943434.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 399084008473 in words is "three hundred ninety-nine billion, eighty-four million, eight thousand, four hundred seventy-three".