39805493 has 32 divisors (see below), whose sum is σ = 51072000. Its totient is φ = 30820608.

The previous prime is 39805481. The next prime is 39805501. The reversal of 39805493 is 39450893.

It is not a de Polignac number, because 39805493 - 2⁴ = 39805477 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39805493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39805453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352205 + ... + 352317.

It is an arithmetic number, because the mean of its divisors is an integer number (1596000).

Almost surely, 2^39805493 is an apocalyptic number.

It is an amenable number.

39805493 is a deficient number, since it is larger than the sum of its proper divisors (11266507).

39805493 is a wasteful number, since it uses less digits than its factorization.

39805493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 39805493 is about 6309.1594527322. The cubic root of 39805493 is about 341.4399512272.

The spelling of 39805493 in words is "thirty-nine million, eight hundred five thousand, four hundred ninety-three".