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383997239 = 19193104717
BaseRepresentation
bin10110111000110…
…101010100110111
3222202120002011222
4112320311110313
51241300402424
6102034220555
712341631323
oct2670652467
9882502158
10383997239
1118783589a
12a872475b
136172a702
1438dda983
1523aa1e5e
hex16e35537

383997239 has 8 divisors (see below), whose sum is σ = 406305840. Its totient is φ = 361898496.

The previous prime is 383997227. The next prime is 383997247. The reversal of 383997239 is 932799383.

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 383997239 - 24 = 383997223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383997209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48692 + ... + 56025.

It is an arithmetic number, because the mean of its divisors is an integer number (50788230).

Almost surely, 2383997239 is an apocalyptic number.

383997239 is a deficient number, since it is larger than the sum of its proper divisors (22308601).

383997239 is a wasteful number, since it uses less digits than its factorization.

383997239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104929.

The product of its digits is 2204496, while the sum is 53.

The square root of 383997239 is about 19595.8474937932. The cubic root of 383997239 is about 726.8464950905.

The spelling of 383997239 in words is "three hundred eighty-three million, nine hundred ninety-seven thousand, two hundred thirty-nine".

Divisors: 1 19 193 3667 104717 1989623 20210381 383997239