940991197 has 2 divisors, whose sum is σ = 940991198. Its totient is φ = 940991196.

The previous prime is 940991153. The next prime is 940991239. The reversal of 940991197 is 791199049.

It is a happy number.

940991197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509224356 + 431766841 = 22566^2 + 20779^2 .

It is an emirp because it is prime and its reverse (791199049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 940991197 - 2⁷ = 940991069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 940991197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940991137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470495598 + 470495599.

It is an arithmetic number, because the mean of its divisors is an integer number (470495599).

Almost surely, 2^940991197 is an apocalyptic number.

It is an amenable number.

940991197 is a deficient number, since it is larger than the sum of its proper divisors (1).

940991197 is an equidigital number, since it uses as much as digits as its factorization.

940991197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 940991197 is about 30675.5798152211. The cubic root of 940991197 is about 979.9303008184.

The spelling of 940991197 in words is "nine hundred forty million, nine hundred ninety-one thousand, one hundred ninety-seven".