789999983 has 2 divisors, whose sum is σ = 789999984. Its totient is φ = 789999982.

The previous prime is 789999961. The next prime is 789999989. The reversal of 789999983 is 389999987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 789999983 - 2⁶ = 789999919 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 (789999989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394999991 + 394999992.

It is an arithmetic number, because the mean of its divisors is an integer number (394999992).

Almost surely, 2^789999983 is an apocalyptic number.

789999983 is a deficient number, since it is larger than the sum of its proper divisors (1).

789999983 is an equidigital number, since it uses as much as digits as its factorization.

789999983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79361856, while the sum is 71.

The square root of 789999983 is about 28106.9383426940. The cubic root of 789999983 is about 924.4335399067.

The spelling of 789999983 in words is "seven hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-three".