999445506 has 16 divisors (see below), whose sum is σ = 2041421184. Its totient is φ = 326060144.

The previous prime is 999445493. The next prime is 999445507. The reversal of 999445506 is 605544999.

It is not an unprimeable number, because it can be changed into a prime (999445507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1771785 + ... + 1772348.

It is an arithmetic number, because the mean of its divisors is an integer number (127588824).

Almost surely, 2^999445506 is an apocalyptic number.

999445506 is an abundant number, since it is smaller than the sum of its proper divisors (1041975678).

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

999445506 is a wasteful number, since it uses less digits than its factorization.

999445506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544185.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 999445506 is about 31614.0080660457. The cubic root of 999445506 is about 999.8151344935.

The spelling of 999445506 in words is "nine hundred ninety-nine million, four hundred forty-five thousand, five hundred six".