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249033943 = 3117594567
BaseRepresentation
bin11101101011111…
…11010011010111
3122100121020100101
432311333103113
51002223041233
640413354531
76112516324
oct1665772327
9570536311
10249033943
11118633984
126b498a47
133c794a82
1425107b4b
1516ce2c7d
hexed7f4d7

249033943 has 8 divisors (see below), whose sum is σ = 257269760. Its totient is φ = 240810840.

The previous prime is 249033923. The next prime is 249033971. The reversal of 249033943 is 349330942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-249033943 is a prime.

It is a super-3 number, since 3×2490339433 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249033913) 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, 52246 + ... + 56812.

It is an arithmetic number, because the mean of its divisors is an integer number (32158720).

Almost surely, 2249033943 is an apocalyptic number.

249033943 is a deficient number, since it is larger than the sum of its proper divisors (8235817).

249033943 is a wasteful number, since it uses less digits than its factorization.

249033943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 249033943 is about 15780.8093265206. The cubic root of 249033943 is about 629.1480404721.

The spelling of 249033943 in words is "two hundred forty-nine million, thirty-three thousand, nine hundred forty-three".

Divisors: 1 31 1759 4567 54529 141577 8033353 249033943