3991314 has 16 divisors (see below), whose sum is σ = 8058528. Its totient is φ = 1317792.

The previous prime is 3991313. The next prime is 3991321. The reversal of 3991314 is 4131993.

It is a Curzon number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (3991313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2467 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (503658).

Almost surely, 2^3991314 is an apocalyptic number.

3991314 is an abundant number, since it is smaller than the sum of its proper divisors (4067214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3991314 is a wasteful number, since it uses less digits than its factorization.

3991314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329.

The product of its digits is 2916, while the sum is 30.

The square root of 3991314 is about 1997.8273198653. The cubic root of 3991314 is about 158.6251205474.

The spelling of 3991314 in words is "three million, nine hundred ninety-one thousand, three hundred fourteen".