4247979 has 16 divisors (see below), whose sum is σ = 5832960. Its totient is φ = 2748960.

The previous prime is 4247923. The next prime is 4247981. The reversal of 4247979 is 9797424.

It is a de Polignac number, because none of the positive numbers 2^k-4247979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4247979.

It is not an unprimeable number, because it can be changed into a prime (4243979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25354 + ... + 25520.

It is an arithmetic number, because the mean of its divisors is an integer number (364560).

Almost surely, 2^4247979 is an apocalyptic number.

4247979 is a deficient number, since it is larger than the sum of its proper divisors (1584981).

4247979 is a wasteful number, since it uses less digits than its factorization.

4247979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370.

The product of its digits is 127008, while the sum is 42.

The square root of 4247979 is about 2061.0625900249. The cubic root of 4247979 is about 161.9549104814.

The spelling of 4247979 in words is "four million, two hundred forty-seven thousand, nine hundred seventy-nine".