4027979 has 4 divisors (see below), whose sum is σ = 4037400. Its totient is φ = 4018560.

The previous prime is 4027957. The next prime is 4027993. The reversal of 4027979 is 9797204.

It is a happy number.

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 4027979 - 2¹⁶ = 3962443 is a prime.

It is a super-2 number, since 2×4027979² = 32449229648882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4027909) 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, 4037 + ... + 4934.

It is an arithmetic number, because the mean of its divisors is an integer number (1009350).

Almost surely, 2^4027979 is an apocalyptic number.

4027979 is a deficient number, since it is larger than the sum of its proper divisors (9421).

4027979 is an equidigital number, since it uses as much as digits as its factorization.

4027979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9420.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 4027979 is about 2006.9825609606. The cubic root of 4027979 is about 159.1093613625.

The spelling of 4027979 in words is "four million, twenty-seven thousand, nine hundred seventy-nine".