3878009699 has 4 divisors (see below), whose sum is σ = 3878416440. Its totient is φ = 3877602960.

The previous prime is 3878009683. The next prime is 3878009711. The reversal of 3878009699 is 9969008783.

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 3878009699 - 2⁴ = 3878009683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3878009609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188717 + ... + 208254.

It is an arithmetic number, because the mean of its divisors is an integer number (969604110).

Almost surely, 2^3878009699 is an apocalyptic number.

3878009699 is a deficient number, since it is larger than the sum of its proper divisors (406741).

3878009699 is an equidigital number, since it uses as much as digits as its factorization.

3878009699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406740.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 3878009699 is about 62273.6677818161. The cubic root of 3878009699 is about 1571.0968708613.

The spelling of 3878009699 in words is "three billion, eight hundred seventy-eight million, nine thousand, six hundred ninety-nine".