789929971 has 2 divisors, whose sum is σ = 789929972. Its totient is φ = 789929970.

The previous prime is 789929951. The next prime is 789929977. The reversal of 789929971 is 179929987.

It is a strong prime.

It is an emirp because it is prime and its reverse (179929987) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789929971 is a prime.

It is not a weakly prime, because it can be changed into another prime (789929977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394964985 + 394964986.

It is an arithmetic number, because the mean of its divisors is an integer number (394964986).

Almost surely, 2^789929971 is an apocalyptic number.

789929971 is a deficient number, since it is larger than the sum of its proper divisors (1).

789929971 is an equidigital number, since it uses as much as digits as its factorization.

789929971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 61.

The square root of 789929971 is about 28105.6928574977. The cubic root of 789929971 is about 924.4062304744.

The spelling of 789929971 in words is "seven hundred eighty-nine million, nine hundred twenty-nine thousand, nine hundred seventy-one".