999160404 has 84 divisors (see below), whose sum is σ = 2619075648. Its totient is φ = 296333840.

The previous prime is 999160373. The next prime is 999160423. The reversal of 999160404 is 404061999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 21258709 + ... + 21258755.

It is an arithmetic number, because the mean of its divisors is an integer number (31179472).

Almost surely, 2^999160404 is an apocalyptic number.

999160404 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999160404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309537824).

999160404 is an abundant number, since it is smaller than the sum of its proper divisors (1619915244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999160404 is an frugal number, since it uses more digits than its factorization.

999160404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 999160404 is about 31609.4986356949. The cubic root of 999160404 is about 999.7200563055.

The spelling of 999160404 in words is "nine hundred ninety-nine million, one hundred sixty thousand, four hundred four".