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7948089 = 32883121
BaseRepresentation
bin11110010100011100111001
3112221210201200
4132110130321
54013314324
6442204413
7124362162
oct36243471
915853650
107948089
114539576
1227b3709
131853916
1410ac769
15a6eec9
hex794739

7948089 has 6 divisors (see below), whose sum is σ = 11480586. Its totient is φ = 5298720.

The previous prime is 7948079. The next prime is 7948091. The reversal of 7948089 is 9808497.

It can be written as a sum of positive squares in only one way, i.e., 3980025 + 3968064 = 1995^2 + 1992^2 .

It is not a de Polignac number, because 7948089 - 211 = 7946041 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7948019) 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 5 ways as a sum of consecutive naturals, for example, 441552 + ... + 441569.

It is an arithmetic number, because the mean of its divisors is an integer number (1913431).

Almost surely, 27948089 is an apocalyptic number.

It is an amenable number.

7948089 is a deficient number, since it is larger than the sum of its proper divisors (3532497).

7948089 is a wasteful number, since it uses less digits than its factorization.

7948089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883127 (or 883124 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 7948089 is about 2819.2355346796. The cubic root of 7948089 is about 199.5664692679.

The spelling of 7948089 in words is "seven million, nine hundred forty-eight thousand, eighty-nine".

Divisors: 1 3 9 883121 2649363 7948089