890805117 has 8 divisors (see below), whose sum is σ = 1257607296. Its totient is φ = 558936512.

The previous prime is 890805107. The next prime is 890805137. The reversal of 890805117 is 711508098.

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 890805117 - 2⁷ = 890804989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890805107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8733333 + ... + 8733434.

It is an arithmetic number, because the mean of its divisors is an integer number (157200912).

Almost surely, 2^890805117 is an apocalyptic number.

It is an amenable number.

890805117 is a deficient number, since it is larger than the sum of its proper divisors (366802179).

890805117 is a wasteful number, since it uses less digits than its factorization.

890805117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17466787.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 890805117 is about 29846.3585216019. The cubic root of 890805117 is about 962.1901374395.

The spelling of 890805117 in words is "eight hundred ninety million, eight hundred five thousand, one hundred seventeen".