3951871 has 16 divisors (see below), whose sum is σ = 5218560. Its totient is φ = 2897280.

The previous prime is 3951869. The next prime is 3951881. The reversal of 3951871 is 1781593.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3951871 - 2¹ = 3951869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3951811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201 + ... + 2818.

It is an arithmetic number, because the mean of its divisors is an integer number (326160).

Almost surely, 2^3951871 is an apocalyptic number.

3951871 is a deficient number, since it is larger than the sum of its proper divisors (1266689).

3951871 is a wasteful number, since it uses less digits than its factorization.

3951871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054.

The product of its digits is 7560, while the sum is 34.

The square root of 3951871 is about 1987.9313368424. The cubic root of 3951871 is about 158.1008676009.

The spelling of 3951871 in words is "three million, nine hundred fifty-one thousand, eight hundred seventy-one".