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249983 = 1959223
BaseRepresentation
bin111101000001111111
3110200220122
4331001333
530444413
65205155
72060546
oct750177
9420818
10249983
111608a8
121007bb
1389a26
146715d
154e108
hex3d07f

249983 has 8 divisors (see below), whose sum is σ = 268800. Its totient is φ = 231768.

The previous prime is 249973. The next prime is 249989. The reversal of 249983 is 389942.

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 249983 - 24 = 249967 is a prime.

It is a d-powerful number, because it can be written as 2 + 48 + 93 + 94 + 8 + 311 .

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 249983.

It is not an unprimeable number, because it can be changed into a prime (249989) 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, 1010 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (33600).

2249983 is an apocalyptic number.

249983 is a deficient number, since it is larger than the sum of its proper divisors (18817).

249983 is a wasteful number, since it uses less digits than its factorization.

249983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its digits is 15552, while the sum is 35.

The square root of 249983 is about 499.9829997110. The cubic root of 249983 is about 62.9946245519.

The spelling of 249983 in words is "two hundred forty-nine thousand, nine hundred eighty-three".

Divisors: 1 19 59 223 1121 4237 13157 249983