990470 has 32 divisors (see below), whose sum is σ = 2026080. Its totient is φ = 345600.

The previous prime is 990469. The next prime is 990487. The reversal of 990470 is 74099.

990470 = 270² + 271² + ... + 282².

990470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2270 + ... + 2670.

It is an arithmetic number, because the mean of its divisors is an integer number (63315).

2⁹⁹⁰⁴⁷⁰ is an apocalyptic number.

990470 is an abundant number, since it is smaller than the sum of its proper divisors (1035610).

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

990470 is a wasteful number, since it uses less digits than its factorization.

990470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 990470 is about 995.2235929679. The cubic root of 990470 is about 99.6813188353.

The spelling of 990470 in words is "nine hundred ninety thousand, four hundred seventy".