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381479 = 754497
BaseRepresentation
bin1011101001000100111
3201101021212
41131020213
544201404
612102035
73146120
oct1351047
9641255
10381479
1124067a
1216491b
13104837
149d047
157806e
hex5d227

381479 has 4 divisors (see below), whose sum is σ = 435984. Its totient is φ = 326976.

The previous prime is 381467. The next prime is 381481. The reversal of 381479 is 974183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974183 = 7139169.

It is a cyclic number.

It is not a de Polignac number, because 381479 - 28 = 381223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381479.

It is not an unprimeable number, because it can be changed into a prime (381419) 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, 27242 + ... + 27255.

It is an arithmetic number, because the mean of its divisors is an integer number (108996).

2381479 is an apocalyptic number.

381479 is a deficient number, since it is larger than the sum of its proper divisors (54505).

381479 is an equidigital number, since it uses as much as digits as its factorization.

381479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54504.

The product of its digits is 6048, while the sum is 32.

The square root of 381479 is about 617.6398627032. The cubic root of 381479 is about 72.5254132075.

Subtracting 381479 from its reverse (974183), we obtain a cube (592704 = 843).

The spelling of 381479 in words is "three hundred eighty-one thousand, four hundred seventy-nine".

Divisors: 1 7 54497 381479