940115993 has 2 divisors, whose sum is σ = 940115994. Its totient is φ = 940115992.

The previous prime is 940115987. The next prime is 940116049. The reversal of 940115993 is 399511049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 932203024 + 7912969 = 30532^2 + 2813^2 .

It is a cyclic number.

It is not a de Polignac number, because 940115993 - 2⁴ = 940115977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 940115993.

It is not a weakly prime, because it can be changed into another prime (940115903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470057996 + 470057997.

It is an arithmetic number, because the mean of its divisors is an integer number (470057997).

Almost surely, 2^940115993 is an apocalyptic number.

It is an amenable number.

940115993 is a deficient number, since it is larger than the sum of its proper divisors (1).

940115993 is an equidigital number, since it uses as much as digits as its factorization.

940115993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 940115993 is about 30661.3110124143. The cubic root of 940115993 is about 979.6263996582.

The spelling of 940115993 in words is "nine hundred forty million, one hundred fifteen thousand, nine hundred ninety-three".