39894859 has 2 divisors, whose sum is σ = 39894860. Its totient is φ = 39894858.

The previous prime is 39894847. The next prime is 39894901. The reversal of 39894859 is 95849893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39894859 - 2⁷ = 39894731 is a prime.

It is not a weakly prime, because it can be changed into another prime (39894809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19947429 + 19947430.

It is an arithmetic number, because the mean of its divisors is an integer number (19947430).

Almost surely, 2^39894859 is an apocalyptic number.

39894859 is a deficient number, since it is larger than the sum of its proper divisors (1).

39894859 is an equidigital number, since it uses as much as digits as its factorization.

39894859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The square root of 39894859 is about 6316.2377251019. The cubic root of 39894859 is about 341.6952787725.

The spelling of 39894859 in words is "thirty-nine million, eight hundred ninety-four thousand, eight hundred fifty-nine".