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91943 is a prime number
BaseRepresentation
bin10110011100100111
311200010022
4112130213
510420233
61545355
7532025
oct263447
9150108
1091943
1163095
124525b
1332b07
1425715
151c398
hex16727

91943 has 2 divisors, whose sum is σ = 91944. Its totient is φ = 91942.

The previous prime is 91939. The next prime is 91951. The reversal of 91943 is 34919.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (34919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91943 - 22 = 91939 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45971 + 45972.

It is an arithmetic number, because the mean of its divisors is an integer number (45972).

291943 is an apocalyptic number.

91943 is a deficient number, since it is larger than the sum of its proper divisors (1).

91943 is an equidigital number, since it uses as much as digits as its factorization.

91943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 26.

The square root of 91943 is about 303.2210414862. The cubic root of 91943 is about 45.1342492992.

The spelling of 91943 in words is "ninety-one thousand, nine hundred forty-three".