940759991 has 4 divisors (see below), whose sum is σ = 996098832. Its totient is φ = 885421152.

The previous prime is 940759951. The next prime is 940759997. The reversal of 940759991 is 199957049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199957049 = 673 ⋅297113.

It is a cyclic number.

It is not a de Polignac number, because 940759991 - 2¹⁴ = 940743607 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 (940759997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27669395 + ... + 27669428.

It is an arithmetic number, because the mean of its divisors is an integer number (249024708).

Almost surely, 2^940759991 is an apocalyptic number.

940759991 is a deficient number, since it is larger than the sum of its proper divisors (55338841).

940759991 is a wasteful number, since it uses less digits than its factorization.

940759991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55338840.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 940759991 is about 30671.8110159801. The cubic root of 940759991 is about 979.8500364034.

The spelling of 940759991 in words is "nine hundred forty million, seven hundred fifty-nine thousand, nine hundred ninety-one".