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7985423 is a prime number
BaseRepresentation
bin11110011101100100001111
3120000200221102
4132131210033
54021013143
6443053315
7124606055
oct36354417
916020842
107985423
114564626
12281123b
131867904
1410bc1d5
15a7b0b8
hex79d90f

7985423 has 2 divisors, whose sum is σ = 7985424. Its totient is φ = 7985422.

The previous prime is 7985413. The next prime is 7985429. The reversal of 7985423 is 3245897.

It is a strong prime.

It is an emirp because it is prime and its reverse (3245897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7985423 - 210 = 7984399 is a prime.

It is equal to p538877 and since 7985423 and 538877 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7985429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992711 + 3992712.

It is an arithmetic number, because the mean of its divisors is an integer number (3992712).

Almost surely, 27985423 is an apocalyptic number.

7985423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7985423 is an equidigital number, since it uses as much as digits as its factorization.

7985423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 7985423 is about 2825.8490759416. The cubic root of 7985423 is about 199.8784511443.

The spelling of 7985423 in words is "seven million, nine hundred eighty-five thousand, four hundred twenty-three".