39623 has 2 divisors, whose sum is σ = 39624. Its totient is φ = 39622.

The previous prime is 39619. The next prime is 39631. The reversal of 39623 is 32693.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39623 - 2² = 39619 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 9 + 6³ + 2⁵ + 3⁹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19811 + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (19812).

2³⁹⁶²³ is an apocalyptic number.

39623 is a deficient number, since it is larger than the sum of its proper divisors (1).

39623 is an equidigital number, since it uses as much as digits as its factorization.

39623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 23.

The square root of 39623 is about 199.0552687070. The cubic root of 39623 is about 34.0917361146.

The spelling of 39623 in words is "thirty-nine thousand, six hundred twenty-three".