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40739 is a prime number
BaseRepresentation
bin1001111100100011
32001212212
421330203
52300424
6512335
7226526
oct117443
961785
1040739
1128676
121b6ab
131570a
1410bbd
15c10e
hex9f23

40739 has 2 divisors, whose sum is σ = 40740. Its totient is φ = 40738.

The previous prime is 40709. The next prime is 40751. The reversal of 40739 is 93704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40739 - 28 = 40483 is a prime.

It is a super-2 number, since 2×407392 = 3319332242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40709) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20369 + 20370.

It is an arithmetic number, because the mean of its divisors is an integer number (20370).

240739 is an apocalyptic number.

40739 is a deficient number, since it is larger than the sum of its proper divisors (1).

40739 is an equidigital number, since it uses as much as digits as its factorization.

40739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 40739 is about 201.8390447857. The cubic root of 40739 is about 34.4088471025.

The spelling of 40739 in words is "forty thousand, seven hundred thirty-nine".