39442903 has 4 divisors (see below), whose sum is σ = 39685048. Its totient is φ = 39200760.

The previous prime is 39442901. The next prime is 39442913. The reversal of 39442903 is 30924493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30924493 = 53 ⋅583481.

It is a cyclic number.

It is not a de Polignac number, because 39442903 - 2¹ = 39442901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39442901) 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, 120828 + ... + 121153.

It is an arithmetic number, because the mean of its divisors is an integer number (9921262).

Almost surely, 2^39442903 is an apocalyptic number.

39442903 is a deficient number, since it is larger than the sum of its proper divisors (242145).

39442903 is a wasteful number, since it uses less digits than its factorization.

39442903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242144.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 39442903 is about 6280.3585088751. The cubic root of 39442903 is about 340.4000567752.

The spelling of 39442903 in words is "thirty-nine million, four hundred forty-two thousand, nine hundred three".