39845473 has 4 divisors (see below), whose sum is σ = 40520880. Its totient is φ = 39170068.

The previous prime is 39845471. The next prime is 39845479. The reversal of 39845473 is 37454893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39845473 - 2¹ = 39845471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39845471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337615 + ... + 337732.

It is an arithmetic number, because the mean of its divisors is an integer number (10130220).

Almost surely, 2^39845473 is an apocalyptic number.

It is an amenable number.

39845473 is a deficient number, since it is larger than the sum of its proper divisors (675407).

39845473 is an equidigital number, since it uses as much as digits as its factorization.

39845473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675406.

The product of its digits is 362880, while the sum is 43.

The square root of 39845473 is about 6312.3270669382. The cubic root of 39845473 is about 341.5542252513.

The spelling of 39845473 in words is "thirty-nine million, eight hundred forty-five thousand, four hundred seventy-three".