39240923 has 4 divisors (see below), whose sum is σ = 39281280. Its totient is φ = 39200568.

The previous prime is 39240907. The next prime is 39240937. The reversal of 39240923 is 32904293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32904293 = 2029 ⋅16217.

It is a cyclic number.

It is not a de Polignac number, because 39240923 - 2⁴ = 39240907 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 39240923.

It is not an unprimeable number, because it can be changed into a prime (39240023) 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, 18683 + ... + 20676.

It is an arithmetic number, because the mean of its divisors is an integer number (9820320).

Almost surely, 2^39240923 is an apocalyptic number.

39240923 is a deficient number, since it is larger than the sum of its proper divisors (40357).

39240923 is an equidigital number, since it uses as much as digits as its factorization.

39240923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40356.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 39240923 is about 6264.2575777182. The cubic root of 39240923 is about 339.8180196853.

The spelling of 39240923 in words is "thirty-nine million, two hundred forty thousand, nine hundred twenty-three".