39445679 has 8 divisors (see below), whose sum is σ = 48548640. Its totient is φ = 31209696.

The previous prime is 39445673. The next prime is 39445687. The reversal of 39445679 is 97654493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-39445679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39445673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216644 + ... + 216825.

It is an arithmetic number, because the mean of its divisors is an integer number (6068580).

Almost surely, 2^39445679 is an apocalyptic number.

39445679 is a deficient number, since it is larger than the sum of its proper divisors (9102961).

39445679 is a wasteful number, since it uses less digits than its factorization.

39445679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433489.

The product of its digits is 816480, while the sum is 47.

The square root of 39445679 is about 6280.5795114782. The cubic root of 39445679 is about 340.4080423976.

The spelling of 39445679 in words is "thirty-nine million, four hundred forty-five thousand, six hundred seventy-nine".