39879658 has 16 divisors (see below), whose sum is σ = 73624320. Its totient is φ = 15776496.

The previous prime is 39879647. The next prime is 39879659. The reversal of 39879658 is 85697893.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39879599 and 39879608.

It is not an unprimeable number, because it can be changed into a prime (39879659) 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, 109378 + ... + 109741.

It is an arithmetic number, because the mean of its divisors is an integer number (4601520).

Almost surely, 2^39879658 is an apocalyptic number.

39879658 is a deficient number, since it is larger than the sum of its proper divisors (33744662).

39879658 is a wasteful number, since it uses less digits than its factorization.

39879658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219141.

The product of its digits is 3265920, while the sum is 55.

The square root of 39879658 is about 6315.0342833590. The cubic root of 39879658 is about 341.6518749363.

The spelling of 39879658 in words is "thirty-nine million, eight hundred seventy-nine thousand, six hundred fifty-eight".