789929947 has 2 divisors, whose sum is σ = 789929948. Its totient is φ = 789929946.

The previous prime is 789929897. The next prime is 789929951. The reversal of 789929947 is 749929987.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789929947 is a prime.

It is a Chen 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, 394964973 + 394964974.

It is an arithmetic number, because the mean of its divisors is an integer number (394964974).

Almost surely, 2^789929947 is an apocalyptic number.

789929947 is a deficient number, since it is larger than the sum of its proper divisors (1).

789929947 is an equidigital number, since it uses as much as digits as its factorization.

789929947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 64.

The square root of 789929947 is about 28105.6924305380. The cubic root of 789929947 is about 924.4062211125.

The spelling of 789929947 in words is "seven hundred eighty-nine million, nine hundred twenty-nine thousand, nine hundred forty-seven".