940243847 has 2 divisors, whose sum is σ = 940243848. Its totient is φ = 940243846.

The previous prime is 940243783. The next prime is 940243921. The reversal of 940243847 is 748342049.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 940243847 - 2⁶ = 940243783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940246847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470121923 + 470121924.

It is an arithmetic number, because the mean of its divisors is an integer number (470121924).

Almost surely, 2^940243847 is an apocalyptic number.

940243847 is a deficient number, since it is larger than the sum of its proper divisors (1).

940243847 is an equidigital number, since it uses as much as digits as its factorization.

940243847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 940243847 is about 30663.3958817350. The cubic root of 940243847 is about 979.6708067587.

The spelling of 940243847 in words is "nine hundred forty million, two hundred forty-three thousand, eight hundred forty-seven".