994921 has 4 divisors (see below), whose sum is σ = 1006992. Its totient is φ = 982852.

The previous prime is 994913. The next prime is 994927. The reversal of 994921 is 129499.

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 994921 - 2³ = 994913 is a prime.

It is a Duffinian number.

994921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (994927) 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, 5911 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (251748).

2⁹⁹⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

994921 is a deficient number, since it is larger than the sum of its proper divisors (12071).

994921 is a wasteful number, since it uses less digits than its factorization.

994921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12070.

The product of its digits is 5832, while the sum is 34.

The square root of 994921 is about 997.4572672551. The cubic root of 994921 is about 99.8304125636.

The spelling of 994921 in words is "nine hundred ninety-four thousand, nine hundred twenty-one".