39189243 has 8 divisors (see below), whose sum is σ = 52628800. Its totient is φ = 25937928.

The previous prime is 39189221. The next prime is 39189257. The reversal of 39189243 is 34298193.

39189243 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39189243 - 2⁹ = 39188731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39189203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46573 + ... + 47406.

It is an arithmetic number, because the mean of its divisors is an integer number (6578600).

Almost surely, 2^39189243 is an apocalyptic number.

39189243 is a deficient number, since it is larger than the sum of its proper divisors (13439557).

39189243 is a wasteful number, since it uses less digits than its factorization.

39189243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94121.

The product of its digits is 46656, while the sum is 39.

The square root of 39189243 is about 6260.1312286565. The cubic root of 39189243 is about 339.6687748906.

The spelling of 39189243 in words is "thirty-nine million, one hundred eighty-nine thousand, two hundred forty-three".