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97939 = 372647
BaseRepresentation
bin10111111010010011
311222100101
4113322103
511113224
62033231
7555352
oct277223
9158311
1097939
1167646
1248817
133576a
1427999
151e044
hex17e93

97939 has 4 divisors (see below), whose sum is σ = 100624. Its totient is φ = 95256.

The previous prime is 97931. The next prime is 97943. The reversal of 97939 is 93979.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97939 - 23 = 97931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2647 = 97939 / (9 + 7 + 9 + 3 + 9).

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 97898 and 97907.

It is not an unprimeable number, because it can be changed into a prime (97931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287 + ... + 1360.

It is an arithmetic number, because the mean of its divisors is an integer number (25156).

297939 is an apocalyptic number.

97939 is a deficient number, since it is larger than the sum of its proper divisors (2685).

97939 is a wasteful number, since it uses less digits than its factorization.

97939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684.

The product of its digits is 15309, while the sum is 37.

The square root of 97939 is about 312.9520730080. The cubic root of 97939 is about 46.0947950639.

The spelling of 97939 in words is "ninety-seven thousand, nine hundred thirty-nine".

Divisors: 1 37 2647 97939