3891479 has 4 divisors (see below), whose sum is σ = 3895584. Its totient is φ = 3887376.

The previous prime is 3891469. The next prime is 3891493. The reversal of 3891479 is 9741983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3891479 - 2¹² = 3887383 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 (3891449) 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, 179 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (973896).

Almost surely, 2^3891479 is an apocalyptic number.

3891479 is a deficient number, since it is larger than the sum of its proper divisors (4105).

3891479 is a wasteful number, since it uses less digits than its factorization.

3891479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its digits is 54432, while the sum is 41.

The square root of 3891479 is about 1972.6831980833. The cubic root of 3891479 is about 157.2913706957.

The spelling of 3891479 in words is "three million, eight hundred ninety-one thousand, four hundred seventy-nine".