945986 has 4 divisors (see below), whose sum is σ = 1418982. Its totient is φ = 472992.

The previous prime is 945983. The next prime is 946003. The reversal of 945986 is 689549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689549 = 7 ⋅98507.

It can be written as a sum of positive squares in only one way, i.e., 516961 + 429025 = 719^2 + 655^2 .

It is not an unprimeable number, because it can be changed into a prime (945983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236495 + ... + 236498.

2⁹⁴⁵⁹⁸⁶ is an apocalyptic number.

945986 is a deficient number, since it is larger than the sum of its proper divisors (472996).

945986 is a wasteful number, since it uses less digits than its factorization.

945986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472995.

The product of its digits is 77760, while the sum is 41.

The square root of 945986 is about 972.6181162203. The cubic root of 945986 is about 98.1661072982.

The spelling of 945986 in words is "nine hundred forty-five thousand, nine hundred eighty-six".