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9290239 = 76121757
BaseRepresentation
bin100011011100…
…000111111111
3122110222210221
4203130013333
54334241424
6531042211
7141652150
oct43340777
918428727
109290239
115275992
123140367
131c037aa
14133b927
15c379e4
hex8dc1ff

9290239 has 8 divisors (see below), whose sum is σ = 10791968. Its totient is φ = 7832160.

The previous prime is 9290233. The next prime is 9290243. The reversal of 9290239 is 9320929.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9290239 - 215 = 9257471 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 (9290233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10452 + ... + 11305.

It is an arithmetic number, because the mean of its divisors is an integer number (1348996).

Almost surely, 29290239 is an apocalyptic number.

9290239 is a deficient number, since it is larger than the sum of its proper divisors (1501729).

9290239 is a wasteful number, since it uses less digits than its factorization.

9290239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21825.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 9290239 is about 3047.9893372517. The cubic root of 9290239 is about 210.2207731108.

Subtracting from 9290239 its sum of digits (34), we obtain a triangular number (9290205 = T4310).

The spelling of 9290239 in words is "nine million, two hundred ninety thousand, two hundred thirty-nine".

Divisors: 1 7 61 427 21757 152299 1327177 9290239