4978709 has 2 divisors, whose sum is σ = 4978710. Its totient is φ = 4978708.

The previous prime is 4978697. The next prime is 4978723. The reversal of 4978709 is 9078794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3591025 + 1387684 = 1895^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 4978709 - 2⁸ = 4978453 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4978709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4978769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489354 + 2489355.

It is an arithmetic number, because the mean of its divisors is an integer number (2489355).

Almost surely, 2^4978709 is an apocalyptic number.

It is an amenable number.

4978709 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978709 is an equidigital number, since it uses as much as digits as its factorization.

4978709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 4978709 is about 2231.3020862268. The cubic root of 4978709 is about 170.7545353563.

The spelling of 4978709 in words is "four million, nine hundred seventy-eight thousand, seven hundred nine".