39830979 has 4 divisors (see below), whose sum is σ = 53107976. Its totient is φ = 26553984.

The previous prime is 39830977. The next prime is 39830993. The reversal of 39830979 is 97903893.

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

It is not a de Polignac number, because 39830979 - 2¹ = 39830977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39830977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6638494 + ... + 6638499.

It is an arithmetic number, because the mean of its divisors is an integer number (13276994).

Almost surely, 2^39830979 is an apocalyptic number.

39830979 is a deficient number, since it is larger than the sum of its proper divisors (13276997).

39830979 is a wasteful number, since it uses less digits than its factorization.

39830979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13276996.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 39830979 is about 6311.1788914592. The cubic root of 39830979 is about 341.5128061812.

The spelling of 39830979 in words is "thirty-nine million, eight hundred thirty thousand, nine hundred seventy-nine".