999160405 has 8 divisors (see below), whose sum is σ = 1199868984. Its totient is φ = 798744000.

The previous prime is 999160373. The next prime is 999160423. The reversal of 999160405 is 504061999.

999160405 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 81252196 + 917908209 = 9014^2 + 30297^2 .

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

It is not a de Polignac number, because 999160405 - 2⁵ = 999160373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65446 + ... + 79255.

It is an arithmetic number, because the mean of its divisors is an integer number (149983623).

Almost surely, 2^999160405 is an apocalyptic number.

It is an amenable number.

999160405 is a deficient number, since it is larger than the sum of its proper divisors (200708579).

999160405 is a wasteful number, since it uses less digits than its factorization.

999160405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146087.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 999160405 is about 31609.4986515130. The cubic root of 999160405 is about 999.7200566390.

The spelling of 999160405 in words is "nine hundred ninety-nine million, one hundred sixty thousand, four hundred five".