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380939 = 1329303
BaseRepresentation
bin1011101000000001011
3201100112212
41131000023
544142224
612055335
73144416
oct1350013
9640485
10380939
11240229
1216454b
13104510
149cb7d
1577d0e
hex5d00b

380939 has 4 divisors (see below), whose sum is σ = 410256. Its totient is φ = 351624.

The previous prime is 380929. The next prime is 380951. The reversal of 380939 is 939083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939083 = 3130293.

It is a de Polignac number, because none of the positive numbers 2k-380939 is a prime.

It is a super-2 number, since 2×3809392 = 290229043442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380909) 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, 14639 + ... + 14664.

It is an arithmetic number, because the mean of its divisors is an integer number (102564).

2380939 is an apocalyptic number.

380939 is a deficient number, since it is larger than the sum of its proper divisors (29317).

380939 is a wasteful number, since it uses less digits than its factorization.

380939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29316.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 380939 is about 617.2025599428. The cubic root of 380939 is about 72.4911760961.

The spelling of 380939 in words is "three hundred eighty thousand, nine hundred thirty-nine".

Divisors: 1 13 29303 380939