Search a number
-
+
159930739 = 431371069
BaseRepresentation
bin10011000100001…
…01100101110011
3102010221022201201
421202011211303
5311420240424
623511512031
73651250243
oct1142054563
9363838651
10159930739
1182305371
1245688617
1327198097
1417351b23
15e091d44
hex9885973

159930739 has 4 divisors (see below), whose sum is σ = 160302240. Its totient is φ = 159559240.

The previous prime is 159930721. The next prime is 159930763. The reversal of 159930739 is 937039951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937039951 = 1409665039.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-159930739 is a prime.

It is a super-2 number, since 2×1599307392 = 51155682554172242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159930779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185104 + ... + 185965.

It is an arithmetic number, because the mean of its divisors is an integer number (40075560).

Almost surely, 2159930739 is an apocalyptic number.

159930739 is a deficient number, since it is larger than the sum of its proper divisors (371501).

159930739 is an equidigital number, since it uses as much as digits as its factorization.

159930739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371500.

The product of its (nonzero) digits is 229635, while the sum is 46.

The square root of 159930739 is about 12646.3725629131. The cubic root of 159930739 is about 542.8051773137.

The spelling of 159930739 in words is "one hundred fifty-nine million, nine hundred thirty thousand, seven hundred thirty-nine".

Divisors: 1 431 371069 159930739