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12919379 = 111174489
BaseRepresentation
bin110001010010…
…001001010011
3220022101001112
4301102021103
511301410004
61140523535
7214545554
oct61221123
926271045
1012919379
117324580
1243b05ab
1328a4605
141a0432b
151202e6e
hexc52253

12919379 has 4 divisors (see below), whose sum is σ = 14093880. Its totient is φ = 11744880.

The previous prime is 12919367. The next prime is 12919381. The reversal of 12919379 is 97391921.

12919379 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12919379 - 212 = 12915283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12919339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587234 + ... + 587255.

It is an arithmetic number, because the mean of its divisors is an integer number (3523470).

Almost surely, 212919379 is an apocalyptic number.

12919379 is a deficient number, since it is larger than the sum of its proper divisors (1174501).

12919379 is a wasteful number, since it uses less digits than its factorization.

12919379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174500.

The product of its digits is 30618, while the sum is 41.

The square root of 12919379 is about 3594.3537666735. The cubic root of 12919379 is about 234.6463913788.

The spelling of 12919379 in words is "twelve million, nine hundred nineteen thousand, three hundred seventy-nine".

Divisors: 1 11 1174489 12919379