39975223 has 2 divisors, whose sum is σ = 39975224. Its totient is φ = 39975222.

The previous prime is 39975217. The next prime is 39975241. The reversal of 39975223 is 32257993.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39975223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39975263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19987611 + 19987612.

It is an arithmetic number, because the mean of its divisors is an integer number (19987612).

Almost surely, 2^39975223 is an apocalyptic number.

39975223 is a deficient number, since it is larger than the sum of its proper divisors (1).

39975223 is an equidigital number, since it uses as much as digits as its factorization.

39975223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 39975223 is about 6322.5962230717. The cubic root of 39975223 is about 341.9245612937.

The spelling of 39975223 in words is "thirty-nine million, nine hundred seventy-five thousand, two hundred twenty-three".