3979487 has 4 divisors (see below), whose sum is σ = 3988800. Its totient is φ = 3970176.

The previous prime is 3979463. The next prime is 3979499. The reversal of 3979487 is 7849793.

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

It is a cyclic number.

It is not a de Polignac number, because 3979487 - 2²⁰ = 2930911 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 (3979427) 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, 3983 + ... + 4880.

It is an arithmetic number, because the mean of its divisors is an integer number (997200).

Almost surely, 2^3979487 is an apocalyptic number.

3979487 is a deficient number, since it is larger than the sum of its proper divisors (9313).

3979487 is an equidigital number, since it uses as much as digits as its factorization.

3979487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312.

The product of its digits is 381024, while the sum is 47.

The square root of 3979487 is about 1994.8651583503. The cubic root of 3979487 is about 158.4682870339.

The spelling of 3979487 in words is "three million, nine hundred seventy-nine thousand, four hundred eighty-seven".