Search a number
-
+
79240943 is a prime number
BaseRepresentation
bin1001011100100…
…01111011101111
312112002212010202
410232101323233
5130241202233
611510224115
71651352105
oct456217357
9175085122
1079240943
1140802991
122265503b
1313555a42
14a749c75
156e53be8
hex4b91eef

79240943 has 2 divisors, whose sum is σ = 79240944. Its totient is φ = 79240942.

The previous prime is 79240921. The next prime is 79240979. The reversal of 79240943 is 34904297.

It is a weak prime.

It is an emirp because it is prime and its reverse (34904297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79240943 - 26 = 79240879 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 79240897 and 79240906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79240243) 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 as a sum of consecutive naturals, namely, 39620471 + 39620472.

It is an arithmetic number, because the mean of its divisors is an integer number (39620472).

Almost surely, 279240943 is an apocalyptic number.

79240943 is a deficient number, since it is larger than the sum of its proper divisors (1).

79240943 is an equidigital number, since it uses as much as digits as its factorization.

79240943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 79240943 is about 8901.7382010482. The cubic root of 79240943 is about 429.5198227423.

The spelling of 79240943 in words is "seventy-nine million, two hundred forty thousand, nine hundred forty-three".