940123739 has 2 divisors, whose sum is σ = 940123740. Its totient is φ = 940123738.

The previous prime is 940123697. The next prime is 940123813. The reversal of 940123739 is 937321049.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-940123739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (940123339) 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 as a sum of consecutive naturals, namely, 470061869 + 470061870.

It is an arithmetic number, because the mean of its divisors is an integer number (470061870).

Almost surely, 2^940123739 is an apocalyptic number.

940123739 is a deficient number, since it is larger than the sum of its proper divisors (1).

940123739 is an equidigital number, since it uses as much as digits as its factorization.

940123739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 940123739 is about 30661.4373276923. The cubic root of 940123739 is about 979.6290901649.

The spelling of 940123739 in words is "nine hundred forty million, one hundred twenty-three thousand, seven hundred thirty-nine".