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8648989 = 232912967
BaseRepresentation
bin100000111111…
…100100011101
3121021102011221
4200333210131
54203231424
6505213341
7133341466
oct40774435
917242157
108648989
114978128
122a91251
131a3a95b
141211d6d
15b5c9e4
hex83f91d

8648989 has 8 divisors (see below), whose sum is σ = 9336960. Its totient is φ = 7987056.

The previous prime is 8648953. The next prime is 8649001. The reversal of 8648989 is 9898468.

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 8648989 - 215 = 8616221 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 (8648929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5817 + ... + 7150.

It is an arithmetic number, because the mean of its divisors is an integer number (1167120).

Almost surely, 28648989 is an apocalyptic number.

It is an amenable number.

8648989 is a deficient number, since it is larger than the sum of its proper divisors (687971).

8648989 is a wasteful number, since it uses less digits than its factorization.

8648989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13019.

The product of its digits is 995328, while the sum is 52.

The square root of 8648989 is about 2940.9163537918. The cubic root of 8648989 is about 205.2682508523.

The spelling of 8648989 in words is "eight million, six hundred forty-eight thousand, nine hundred eighty-nine".

Divisors: 1 23 29 667 12967 298241 376043 8648989