108983978 has 4 divisors (see below), whose sum is σ = 163475970. Its totient is φ = 54491988.

The previous prime is 108983969. The next prime is 108984017. The reversal of 108983978 is 879389801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879389801 = 1033 ⋅851297.

It can be written as a sum of positive squares in only one way, i.e., 95316169 + 13667809 = 9763^2 + 3697^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27245993 + ... + 27245996.

Almost surely, 2^108983978 is an apocalyptic number.

108983978 is a deficient number, since it is larger than the sum of its proper divisors (54491992).

108983978 is an equidigital number, since it uses as much as digits as its factorization.

108983978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54491991.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 108983978 is about 10439.5391660743. The cubic root of 108983978 is about 477.6622118222.

The spelling of 108983978 in words is "one hundred eight million, nine hundred eighty-three thousand, nine hundred seventy-eight".