39889898893 has 4 divisors (see below), whose sum is σ = 42958352668. Its totient is φ = 36821445120.

The previous prime is 39889898869. The next prime is 39889898911.

39889898893 is nontrivially palindromic in base 10.

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 10257030729 + 29632868164 = 101277^2 + 172142^2 .

It is a cyclic number.

It is not a de Polignac number, because 39889898893 - 2²¹ = 39887801741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39889898843) 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, 1534226868 + ... + 1534226893.

It is an arithmetic number, because the mean of its divisors is an integer number (10739588167).

Almost surely, 2^39889898893 is an apocalyptic number.

It is an amenable number.

39889898893 is a deficient number, since it is larger than the sum of its proper divisors (3068453775).

39889898893 is a wasteful number, since it uses less digits than its factorization.

39889898893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068453774.

The product of its digits is 1934917632, while the sum is 82.

The spelling of 39889898893 in words is "thirty-nine billion, eight hundred eighty-nine million, eight hundred ninety-eight thousand, eight hundred ninety-three".