4078973809 has 4 divisors (see below), whose sum is σ = 4086988020. Its totient is φ = 4070959600.

The previous prime is 4078973807. The next prime is 4078973813. The reversal of 4078973809 is 9083798704.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3548823184 + 530150625 = 59572^2 + 23025^2 .

It is a cyclic number.

It is not a de Polignac number, because 4078973809 - 2¹ = 4078973807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4078973809.

It is not an unprimeable number, because it can be changed into a prime (4078973807) 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, 4006342 + ... + 4007359.

It is an arithmetic number, because the mean of its divisors is an integer number (1021747005).

Almost surely, 2^4078973809 is an apocalyptic number.

It is an amenable number.

4078973809 is a deficient number, since it is larger than the sum of its proper divisors (8014211).

4078973809 is an equidigital number, since it uses as much as digits as its factorization.

4078973809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8014210.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 4078973809 is about 63866.8443638794. The cubic root of 4078973809 is about 1597.7799691359.

The spelling of 4078973809 in words is "four billion, seventy-eight million, nine hundred seventy-three thousand, eight hundred nine".