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92009309 = 721877741
BaseRepresentation
bin1010111101111…
…11001101011101
320102010120001012
411132333031131
5142023244214
613044025005
72165031500
oct536771535
9212116035
1092009309
1147a33a57
1226992165
13160a66a2
14c311137
15812703e
hex57bf35d

92009309 has 6 divisors (see below), whose sum is σ = 107031294. Its totient is φ = 78865080.

The previous prime is 92009303. The next prime is 92009311. The reversal of 92009309 is 90390029.

It can be written as a sum of positive squares in only one way, i.e., 91968100 + 41209 = 9590^2 + 203^2 .

It is a de Polignac number, because none of the positive numbers 2k-92009309 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 (92009303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 938822 + ... + 938919.

It is an arithmetic number, because the mean of its divisors is an integer number (17838549).

Almost surely, 292009309 is an apocalyptic number.

It is an amenable number.

92009309 is a deficient number, since it is larger than the sum of its proper divisors (15021985).

92009309 is a wasteful number, since it uses less digits than its factorization.

92009309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877755 (or 1877748 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 92009309 is about 9592.1482995208. The cubic root of 92009309 is about 451.4509691764.

The spelling of 92009309 in words is "ninety-two million, nine thousand, three hundred nine".

Divisors: 1 7 49 1877741 13144187 92009309