3899887811 has 4 divisors (see below), whose sum is σ = 3900228312. Its totient is φ = 3899547312.

The previous prime is 3899887799. The next prime is 3899887819. The reversal of 3899887811 is 1187889983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1187889983 = 7 ⋅169698569.

It is a cyclic number.

It is not a de Polignac number, because 3899887811 - 2²⁶ = 3832778947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3899887819) 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, 152450 + ... + 176183.

It is an arithmetic number, because the mean of its divisors is an integer number (975057078).

Almost surely, 2^3899887811 is an apocalyptic number.

3899887811 is a deficient number, since it is larger than the sum of its proper divisors (340501).

3899887811 is a wasteful number, since it uses less digits than its factorization.

3899887811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340500.

The product of its digits is 6967296, while the sum is 62.

The square root of 3899887811 is about 62449.0817466518. The cubic root of 3899887811 is about 1574.0458231260.

The spelling of 3899887811 in words is "three billion, eight hundred ninety-nine million, eight hundred eighty-seven thousand, eight hundred eleven".