100959978 has 16 divisors (see below), whose sum is σ = 230765760. Its totient is φ = 28845696.

The previous prime is 100959973. The next prime is 100959979. The reversal of 100959978 is 879959001.

It is not an unprimeable number, because it can be changed into a prime (100959973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201863 + ... + 1201946.

It is an arithmetic number, because the mean of its divisors is an integer number (14422860).

Almost surely, 2^100959978 is an apocalyptic number.

100959978 is an abundant number, since it is smaller than the sum of its proper divisors (129805782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100959978 is a wasteful number, since it uses less digits than its factorization.

100959978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403821.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 100959978 is about 10047.8842549066. The cubic root of 100959978 is about 465.6394301670.

The spelling of 100959978 in words is "one hundred million, nine hundred fifty-nine thousand, nine hundred seventy-eight".