39804993 has 8 divisors (see below), whose sum is σ = 58970400. Its totient is φ = 26536644.

The previous prime is 39804991. The next prime is 39804997. The reversal of 39804993 is 39940893.

It is not a de Polignac number, because 39804993 - 2¹ = 39804991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39804991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737103 + ... + 737156.

It is an arithmetic number, because the mean of its divisors is an integer number (7371300).

Almost surely, 2^39804993 is an apocalyptic number.

It is an amenable number.

39804993 is a deficient number, since it is larger than the sum of its proper divisors (19165407).

39804993 is a wasteful number, since it uses less digits than its factorization.

39804993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474268 (or 1474262 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 39804993 is about 6309.1198276780. The cubic root of 39804993 is about 341.4385216030.

The spelling of 39804993 in words is "thirty-nine million, eight hundred four thousand, nine hundred ninety-three".