8013866999 has 4 divisors (see below), whose sum is σ = 8014223664. Its totient is φ = 8013510336.

The previous prime is 8013866983. The next prime is 8013867019. The reversal of 8013866999 is 9996683108.

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 8013866999 - 2⁴ = 8013866983 is a prime.

It is a super-2 number, since 2×8013866999² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8013866969) 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, 142187 + ... + 190380.

It is an arithmetic number, because the mean of its divisors is an integer number (2003555916).

Almost surely, 2^8013866999 is an apocalyptic number.

8013866999 is a deficient number, since it is larger than the sum of its proper divisors (356665).

8013866999 is a wasteful number, since it uses less digits than its factorization.

8013866999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356664.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 8013866999 is about 89520.2044177738. The cubic root of 8013866999 is about 2001.1549162059.

The spelling of 8013866999 in words is "eight billion, thirteen million, eight hundred sixty-six thousand, nine hundred ninety-nine".