3921479 has 4 divisors (see below), whose sum is σ = 3927720. Its totient is φ = 3915240.

The previous prime is 3921451. The next prime is 3921497. The reversal of 3921479 is 9741293.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3921479 is a prime.

It is a super-3 number, since 3×3921479³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921499) 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, 2057 + ... + 3474.

It is an arithmetic number, because the mean of its divisors is an integer number (981930).

Almost surely, 2^3921479 is an apocalyptic number.

3921479 is a deficient number, since it is larger than the sum of its proper divisors (6241).

3921479 is an equidigital number, since it uses as much as digits as its factorization.

3921479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240.

The product of its digits is 13608, while the sum is 35.

The square root of 3921479 is about 1980.2724560020. The cubic root of 3921479 is about 157.6945307760.

It can be divided in two parts, 39214 and 79, that added together give a palindrome (39293).

The spelling of 3921479 in words is "three million, nine hundred twenty-one thousand, four hundred seventy-nine".