39423243 has 4 divisors (see below), whose sum is σ = 52564328. Its totient is φ = 26282160.

The previous prime is 39423239. The next prime is 39423253. The reversal of 39423243 is 34232493.

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

It is not a de Polignac number, because 39423243 - 2² = 39423239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39423243.

It is not an unprimeable number, because it can be changed into a prime (39423203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6570538 + ... + 6570543.

It is an arithmetic number, because the mean of its divisors is an integer number (13141082).

Almost surely, 2^39423243 is an apocalyptic number.

39423243 is a deficient number, since it is larger than the sum of its proper divisors (13141085).

39423243 is a wasteful number, since it uses less digits than its factorization.

39423243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13141084.

The product of its digits is 15552, while the sum is 30.

The square root of 39423243 is about 6278.7931165153. The cubic root of 39423243 is about 340.3434908126.

The spelling of 39423243 in words is "thirty-nine million, four hundred twenty-three thousand, two hundred forty-three".