939231786947 has 2 divisors, whose sum is σ = 939231786948. Its totient is φ = 939231786946.

The previous prime is 939231786929. The next prime is 939231786953. The reversal of 939231786947 is 749687132939.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 939231786947 - 2¹⁰ = 939231785923 is a prime.

It is a super-2 number, since 2×939231786947² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (939231786847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469615893473 + 469615893474.

It is an arithmetic number, because the mean of its divisors is an integer number (469615893474).

Almost surely, 2^939231786947 is an apocalyptic number.

939231786947 is a deficient number, since it is larger than the sum of its proper divisors (1).

939231786947 is an equidigital number, since it uses as much as digits as its factorization.

939231786947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123451776, while the sum is 68.

The spelling of 939231786947 in words is "nine hundred thirty-nine billion, two hundred thirty-one million, seven hundred eighty-six thousand, nine hundred forty-seven".