3951897 has 4 divisors (see below), whose sum is σ = 5269200. Its totient is φ = 2634596.

The previous prime is 3951887. The next prime is 3951907. The reversal of 3951897 is 7981593.

It is a happy number.

3951897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3951887) and next prime (3951907).

It is a cyclic number.

It is not a de Polignac number, because 3951897 - 2⁴ = 3951881 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3951887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658647 + ... + 658652.

It is an arithmetic number, because the mean of its divisors is an integer number (1317300).

Almost surely, 2^3951897 is an apocalyptic number.

It is an amenable number.

3951897 is a deficient number, since it is larger than the sum of its proper divisors (1317303).

3951897 is a wasteful number, since it uses less digits than its factorization.

3951897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317302.

The product of its digits is 68040, while the sum is 42.

The square root of 3951897 is about 1987.9378762929. The cubic root of 3951897 is about 158.1012143239.

The spelling of 3951897 in words is "three million, nine hundred fifty-one thousand, eight hundred ninety-seven".