999941 has 4 divisors (see below), whose sum is σ = 1002252. Its totient is φ = 997632.

The previous prime is 999931. The next prime is 999953. The reversal of 999941 is 149999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149999 = 61 ⋅2459.

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 198916 = 895^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 999941 - 2¹⁰ = 998917 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999931) 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, 290 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (250563).

2⁹⁹⁹⁹⁴¹ is an apocalyptic number.

It is an amenable number.

999941 is a deficient number, since it is larger than the sum of its proper divisors (2311).

999941 is a wasteful number, since it uses less digits than its factorization.

999941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310.

The product of its digits is 26244, while the sum is 41.

The square root of 999941 is about 999.9704995649. The cubic root of 999941 is about 99.9980332947.

The spelling of 999941 in words is "nine hundred ninety-nine thousand, nine hundred forty-one".