103978987 has 8 divisors (see below), whose sum is σ = 125823456. Its totient is φ = 83882112.

The previous prime is 103978969. The next prime is 103978999. The reversal of 103978987 is 789879301.

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 103978987 - 2¹⁹ = 103454699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103978907) 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, 436768 + ... + 437005.

It is an arithmetic number, because the mean of its divisors is an integer number (15727932).

Almost surely, 2^103978987 is an apocalyptic number.

103978987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

103978987 is a deficient number, since it is larger than the sum of its proper divisors (21844469).

103978987 is an equidigital number, since it uses as much as digits as its factorization.

103978987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873797.

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 103978987 is about 10197.0087280535. The cubic root of 103978987 is about 470.2352632340.

The spelling of 103978987 in words is "one hundred three million, nine hundred seventy-eight thousand, nine hundred eighty-seven".