940993289 has 4 divisors (see below), whose sum is σ = 945102660. Its totient is φ = 936883920.

The previous prime is 940993283. The next prime is 940993303. The reversal of 940993289 is 982399049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982399049 = 79 ⋅12435431.

It can be written as a sum of positive squares in 2 ways, for example, as 744853264 + 196140025 = 27292^2 + 14005^2 .

It is a cyclic number.

It is not a de Polignac number, because 940993289 - 2¹⁶ = 940927753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 940993289.

It is not an unprimeable number, because it can be changed into a prime (940993283) 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, 2054342 + ... + 2054799.

It is an arithmetic number, because the mean of its divisors is an integer number (236275665).

Almost surely, 2^940993289 is an apocalyptic number.

It is an amenable number.

940993289 is a deficient number, since it is larger than the sum of its proper divisors (4109371).

940993289 is a wasteful number, since it uses less digits than its factorization.

940993289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109370.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 940993289 is about 30675.6139139871. The cubic root of 940993289 is about 979.9310270075.

The spelling of 940993289 in words is "nine hundred forty million, nine hundred ninety-three thousand, two hundred eighty-nine".