946991 has 4 divisors (see below), whose sum is σ = 950184. Its totient is φ = 943800.

The previous prime is 946987. The next prime is 946993. The reversal of 946991 is 199649.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199649 = 43 ⋅4643.

It is a cyclic number.

It is not a de Polignac number, because 946991 - 2² = 946987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (946993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100 + ... + 1761.

It is an arithmetic number, because the mean of its divisors is an integer number (237546).

2⁹⁴⁶⁹⁹¹ is an apocalyptic number.

946991 is a deficient number, since it is larger than the sum of its proper divisors (3193).

946991 is a wasteful number, since it uses less digits than its factorization.

946991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192.

The product of its digits is 17496, while the sum is 38.

The square root of 946991 is about 973.1346258355. The cubic root of 946991 is about 98.2008583485.

The spelling of 946991 in words is "nine hundred forty-six thousand, nine hundred ninety-one".