94121978 has 16 divisors (see below), whose sum is σ = 144897984. Its totient is φ = 45827040.

The previous prime is 94121947. The next prime is 94121987. The reversal of 94121978 is 87912149.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78701 + ... + 79887.

It is an arithmetic number, because the mean of its divisors is an integer number (9056124).

Almost surely, 2^94121978 is an apocalyptic number.

94121978 is a deficient number, since it is larger than the sum of its proper divisors (50776006).

94121978 is a wasteful number, since it uses less digits than its factorization.

94121978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197.

The product of its digits is 36288, while the sum is 41.

The square root of 94121978 is about 9701.6482104846. The cubic root of 94121978 is about 454.8801809845.

The spelling of 94121978 in words is "ninety-four million, one hundred twenty-one thousand, nine hundred seventy-eight".