8406889973 has 8 divisors (see below), whose sum is σ = 8590790208. Its totient is φ = 8224956864.

The previous prime is 8406889961. The next prime is 8406889987. The reversal of 8406889973 is 3799886048.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8406889973 - 2²⁰ = 8405841397 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 (8406889913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483140 + ... + 500237.

It is an arithmetic number, because the mean of its divisors is an integer number (1073848776).

Almost surely, 2^8406889973 is an apocalyptic number.

8406889973 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

8406889973 is a deficient number, since it is larger than the sum of its proper divisors (183900235).

8406889973 is a wasteful number, since it uses less digits than its factorization.

8406889973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983563.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The square root of 8406889973 is about 91689.0940788489. The cubic root of 8406889973 is about 2033.3483509029.

The spelling of 8406889973 in words is "eight billion, four hundred six million, eight hundred eighty-nine thousand, nine hundred seventy-three".