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390394083 = 31961112279
BaseRepresentation
bin10111010001001…
…111000011100011
31000012121002000010
4113101033003203
51244420102313
6102423300003
712450203112
oct2721170343
91005532003
10390394083
11190404942
12aa8aa603
1362b5a221
1439bc3c79
15244174c3
hex1744f0e3

390394083 has 16 divisors (see below), whose sum is σ = 556908800. Its totient is φ = 242520480.

The previous prime is 390394061. The next prime is 390394093. The reversal of 390394083 is 380493093.

It is not a de Polignac number, because 390394083 - 28 = 390393827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390394093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52663 + ... + 59616.

It is an arithmetic number, because the mean of its divisors is an integer number (34806800).

Almost surely, 2390394083 is an apocalyptic number.

390394083 is a deficient number, since it is larger than the sum of its proper divisors (166514717).

390394083 is a wasteful number, since it uses less digits than its factorization.

390394083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112362.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 390394083 is about 19758.3927230936. The cubic root of 390394083 is about 730.8603623406.

The spelling of 390394083 in words is "three hundred ninety million, three hundred ninety-four thousand, eighty-three".

Divisors: 1 3 19 57 61 183 1159 3477 112279 336837 2133301 6399903 6849019 20547057 130131361 390394083