990535 has 24 divisors (see below), whose sum is σ = 1493856. Its totient is φ = 624960.

The previous prime is 990529. The next prime is 990547. The reversal of 990535 is 535099.

It is not a de Polignac number, because 990535 - 2⁵ = 990503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 990497 and 990506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3030 + ... + 3340.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2⁹⁹⁰⁵³⁵ is an apocalyptic number.

990535 is a deficient number, since it is larger than the sum of its proper divisors (503321).

990535 is a wasteful number, since it uses less digits than its factorization.

990535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 6075, while the sum is 31.

The square root of 990535 is about 995.2562484104. The cubic root of 990535 is about 99.6834993301.

The spelling of 990535 in words is "nine hundred ninety thousand, five hundred thirty-five".