4971979 has 4 divisors (see below), whose sum is σ = 5188176. Its totient is φ = 4755784.

The previous prime is 4971971. The next prime is 4971991. The reversal of 4971979 is 9791794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9791794 = 2 ⋅4895897.

It is a cyclic number.

It is not a de Polignac number, because 4971979 - 2³ = 4971971 is a prime.

It is a super-4 number, since 4×4971979⁴ (a number of 28 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4971971) 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, 108064 + ... + 108109.

It is an arithmetic number, because the mean of its divisors is an integer number (1297044).

Almost surely, 2^4971979 is an apocalyptic number.

4971979 is a deficient number, since it is larger than the sum of its proper divisors (216197).

4971979 is a wasteful number, since it uses less digits than its factorization.

4971979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216196.

The product of its digits is 142884, while the sum is 46.

The square root of 4971979 is about 2229.7934881957. The cubic root of 4971979 is about 170.6775611704.

The spelling of 4971979 in words is "four million, nine hundred seventy-one thousand, nine hundred seventy-nine".