39423239 has 2 divisors, whose sum is σ = 39423240. Its totient is φ = 39423238.

The previous prime is 39423203. The next prime is 39423253. The reversal of 39423239 is 93232493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39423239 - 2¹² = 39419143 is a prime.

It is a super-2 number, since 2×39423239² = 3108383546502242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39423199 and 39423208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39423259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19711619 + 19711620.

It is an arithmetic number, because the mean of its divisors is an integer number (19711620).

Almost surely, 2^39423239 is an apocalyptic number.

39423239 is a deficient number, since it is larger than the sum of its proper divisors (1).

39423239 is an equidigital number, since it uses as much as digits as its factorization.

39423239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 39423239 is about 6278.7927979827. The cubic root of 39423239 is about 340.3434793019.

The spelling of 39423239 in words is "thirty-nine million, four hundred twenty-three thousand, two hundred thirty-nine".