39794879 has 4 divisors (see below), whose sum is σ = 39819576. Its totient is φ = 39770184.

The previous prime is 39794857. The next prime is 39794897. The reversal of 39794879 is 97849793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39794879 - 2¹⁶ = 39729343 is a prime.

It is a Duffinian number.

39794879 is a Rhonda number in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39794819) 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, 9749 + ... + 13214.

It is an arithmetic number, because the mean of its divisors is an integer number (9954894).

Almost surely, 2^39794879 is an apocalyptic number.

39794879 is a deficient number, since it is larger than the sum of its proper divisors (24697).

39794879 is a wasteful number, since it uses less digits than its factorization.

39794879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24696.

The product of its digits is 3429216, while the sum is 56.

The square root of 39794879 is about 6308.3182386433. The cubic root of 39794879 is about 341.4096005936.

The spelling of 39794879 in words is "thirty-nine million, seven hundred ninety-four thousand, eight hundred seventy-nine".