940991173 has 4 divisors (see below), whose sum is σ = 947306700. Its totient is φ = 934675648.

The previous prime is 940991153. The next prime is 940991197. The reversal of 940991173 is 371199049.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371199049 = 13 ⋅28553773.

It can be written as a sum of positive squares in 2 ways, for example, as 278289124 + 662702049 = 16682^2 + 25743^2 .

It is a cyclic number.

It is not a de Polignac number, because 940991173 - 2²⁹ = 404120261 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 (940991113) 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, 3157540 + ... + 3157837.

It is an arithmetic number, because the mean of its divisors is an integer number (236826675).

Almost surely, 2^940991173 is an apocalyptic number.

It is an amenable number.

940991173 is a deficient number, since it is larger than the sum of its proper divisors (6315527).

940991173 is a wasteful number, since it uses less digits than its factorization.

940991173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6315526.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 940991173 is about 30675.5794240304. The cubic root of 940991173 is about 979.9302924873.

The spelling of 940991173 in words is "nine hundred forty million, nine hundred ninety-one thousand, one hundred seventy-three".