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212083939 = 415699091
BaseRepresentation
bin11001010010000…
…10010011100011
3112210001222110201
430221002103203
5413243141224
633013410031
75153453344
oct1451022343
9483058421
10212083939
11a9796891
125b039917
1334c28572
142024a0cb
1513944a44
hexca424e3

212083939 has 8 divisors (see below), whose sum is σ = 217662480. Its totient is φ = 206524800.

The previous prime is 212083933. The next prime is 212083957. The reversal of 212083939 is 939380212.

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

It is a cyclic number.

It is not a de Polignac number, because 212083939 - 27 = 212083811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212083898 and 212083907.

It is not an unprimeable number, because it can be changed into a prime (212083933) 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, 18784 + ... + 27874.

It is an arithmetic number, because the mean of its divisors is an integer number (27207810).

Almost surely, 2212083939 is an apocalyptic number.

212083939 is a deficient number, since it is larger than the sum of its proper divisors (5578541).

212083939 is an equidigital number, since it uses as much as digits as its factorization.

212083939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9701.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 212083939 is about 14563.1019703908. The cubic root of 212083939 is about 596.3518812643.

The spelling of 212083939 in words is "two hundred twelve million, eighty-three thousand, nine hundred thirty-nine".

Divisors: 1 41 569 9091 23329 372731 5172779 212083939