103978891 has 8 divisors (see below), whose sum is σ = 107981280. Its totient is φ = 100004352.

The previous prime is 103978873. The next prime is 103978907. The reversal of 103978891 is 198879301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103978891 - 2⁹ = 103978379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103978801) 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, 811 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (13497660).

Almost surely, 2^103978891 is an apocalyptic number.

103978891 is a deficient number, since it is larger than the sum of its proper divisors (4002389).

103978891 is a wasteful number, since it uses less digits than its factorization.

103978891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13925.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 103978891 is about 10197.0040207896. The cubic root of 103978891 is about 470.2351185170.

The spelling of 103978891 in words is "one hundred three million, nine hundred seventy-eight thousand, eight hundred ninety-one".