39979834 has 4 divisors (see below), whose sum is σ = 59969754. Its totient is φ = 19989916.

The previous prime is 39979831. The next prime is 39979843. The reversal of 39979834 is 43897993.

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

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 18792225 = 4603^2 + 4335^2 .

It is not an unprimeable number, because it can be changed into a prime (39979831) 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 as a sum of consecutive naturals, namely, 9994957 + ... + 9994960.

Almost surely, 2^39979834 is an apocalyptic number.

39979834 is a deficient number, since it is larger than the sum of its proper divisors (19989920).

39979834 is a wasteful number, since it uses less digits than its factorization.

39979834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19989919.

The product of its digits is 1469664, while the sum is 52.

The square root of 39979834 is about 6322.9608570669. The cubic root of 39979834 is about 341.9377073828.

It can be divided in two parts, 3997 and 9834, that added together give a palindrome (13831).

The spelling of 39979834 in words is "thirty-nine million, nine hundred seventy-nine thousand, eight hundred thirty-four".