3979895 has 4 divisors (see below), whose sum is σ = 4775880. Its totient is φ = 3183912.

The previous prime is 3979891. The next prime is 3979901. The reversal of 3979895 is 5989793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3979895 - 2² = 3979891 is a prime.

It is a super-2 number, since 2×3979895² = 31679128422050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397985 + ... + 397994.

It is an arithmetic number, because the mean of its divisors is an integer number (1193970).

Almost surely, 2^3979895 is an apocalyptic number.

3979895 is a deficient number, since it is larger than the sum of its proper divisors (795985).

3979895 is an equidigital number, since it uses as much as digits as its factorization.

3979895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795984.

The product of its digits is 612360, while the sum is 50.

The square root of 3979895 is about 1994.9674182803. The cubic root of 3979895 is about 158.4737025437.

It can be divided in two parts, 39798 and 95, that added together give a palindrome (39893).

The spelling of 3979895 in words is "three million, nine hundred seventy-nine thousand, eight hundred ninety-five".