3951859 has 12 divisors (see below), whose sum is σ = 4236544. Its totient is φ = 3683232.

The previous prime is 3951841. The next prime is 3951863. The reversal of 3951859 is 9581593.

It is not a de Polignac number, because 3951859 - 2⁹ = 3951347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3951869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31054 + ... + 31180.

Almost surely, 2^3951859 is an apocalyptic number.

3951859 is a deficient number, since it is larger than the sum of its proper divisors (284685).

3951859 is a wasteful number, since it uses less digits than its factorization.

3951859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 193 counting only the distinct ones).

The product of its digits is 48600, while the sum is 40.

The square root of 3951859 is about 1987.9283186272. The cubic root of 3951859 is about 158.1007075744.

The spelling of 3951859 in words is "three million, nine hundred fifty-one thousand, eight hundred fifty-nine".