39364809 has 24 divisors (see below), whose sum is σ = 61094880. Its totient is φ = 22450560.

The previous prime is 39364769. The next prime is 39364811. The reversal of 39364809 is 90846393.

It is not a de Polignac number, because 39364809 - 2¹⁷ = 39233737 is a prime.

It is a Curzon number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (39360809) 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 23 ways as a sum of consecutive naturals, for example, 2982 + ... + 9360.

It is an arithmetic number, because the mean of its divisors is an integer number (2545620).

Almost surely, 2^39364809 is an apocalyptic number.

It is an amenable number.

39364809 is a deficient number, since it is larger than the sum of its proper divisors (21730071).

39364809 is a wasteful number, since it uses less digits than its factorization.

39364809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421 (or 6410 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 39364809 is about 6274.1381081388. The cubic root of 39364809 is about 340.1752527878.

The spelling of 39364809 in words is "thirty-nine million, three hundred sixty-four thousand, eight hundred nine".