3985658923 has 2 divisors, whose sum is σ = 3985658924. Its totient is φ = 3985658922.

The previous prime is 3985658917. The next prime is 3985658939. The reversal of 3985658923 is 3298565893.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3985658923 is a prime.

It is not a weakly prime, because it can be changed into another prime (3985658903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992829461 + 1992829462.

It is an arithmetic number, because the mean of its divisors is an integer number (1992829462).

Almost surely, 2^3985658923 is an apocalyptic number.

3985658923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985658923 is an equidigital number, since it uses as much as digits as its factorization.

3985658923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13996800, while the sum is 58.

The square root of 3985658923 is about 63132.0752312167. The cubic root of 3985658923 is about 1585.5016935263.

The spelling of 3985658923 in words is "three billion, nine hundred eighty-five million, six hundred fifty-eight thousand, nine hundred twenty-three".