990461 has 4 divisors (see below), whose sum is σ = 1005312. Its totient is φ = 975612.

The previous prime is 990397. The next prime is 990463. The reversal of 990461 is 164099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 990461 - 2⁶ = 990397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 990461.

It is not an unprimeable number, because it can be changed into a prime (990463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7325 + ... + 7458.

It is an arithmetic number, because the mean of its divisors is an integer number (251328).

2⁹⁹⁰⁴⁶¹ is an apocalyptic number.

It is an amenable number.

990461 is a deficient number, since it is larger than the sum of its proper divisors (14851).

990461 is a wasteful number, since it uses less digits than its factorization.

990461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 990461 is about 995.2190713607. The cubic root of 990461 is about 99.6810169131.

The spelling of 990461 in words is "nine hundred ninety thousand, four hundred sixty-one".