105859978 has 16 divisors (see below), whose sum is σ = 187329024. Its totient is φ = 43904880.

The previous prime is 105859967. The next prime is 105859979. The reversal of 105859978 is 879958501.

It is a super-4 number, since 4×105859978⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (105859979) 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, 121525 + ... + 122392.

It is an arithmetic number, because the mean of its divisors is an integer number (11708064).

Almost surely, 2^105859978 is an apocalyptic number.

105859978 is a deficient number, since it is larger than the sum of its proper divisors (81469046).

105859978 is a wasteful number, since it uses less digits than its factorization.

105859978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243957.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 105859978 is about 10288.8278243928. The cubic root of 105859978 is about 473.0538700570.

The spelling of 105859978 in words is "one hundred five million, eight hundred fifty-nine thousand, nine hundred seventy-eight".