103978979 has 4 divisors (see below), whose sum is σ = 111977376. Its totient is φ = 95980584.

The previous prime is 103978969. The next prime is 103978999. The reversal of 103978979 is 979879301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979879301 = 3167 ⋅309403.

It is a cyclic number.

It is not a de Polignac number, because 103978979 - 2¹² = 103974883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103978979.

It is not an unprimeable number, because it can be changed into a prime (103978909) 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, 3999179 + ... + 3999204.

It is an arithmetic number, because the mean of its divisors is an integer number (27994344).

Almost surely, 2^103978979 is an apocalyptic number.

103978979 is a deficient number, since it is larger than the sum of its proper divisors (7998397).

103978979 is an equidigital number, since it uses as much as digits as its factorization.

103978979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7998396.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 103978979 is about 10197.0083357816. The cubic root of 103978979 is about 470.2352511743.

The spelling of 103978979 in words is "one hundred three million, nine hundred seventy-eight thousand, nine hundred seventy-nine".