103997987 has 2 divisors, whose sum is σ = 103997988. Its totient is φ = 103997986.

The previous prime is 103997953. The next prime is 103997989. The reversal of 103997987 is 789799301.

It is a strong prime.

It is an emirp because it is prime and its reverse (789799301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103997987 - 2¹² = 103993891 is a prime.

Together with 103997989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103997989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51998993 + 51998994.

It is an arithmetic number, because the mean of its divisors is an integer number (51998994).

Almost surely, 2^103997987 is an apocalyptic number.

103997987 is a deficient number, since it is larger than the sum of its proper divisors (1).

103997987 is an equidigital number, since it uses as much as digits as its factorization.

103997987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 103997987 is about 10197.9403312630. The cubic root of 103997987 is about 470.2639033985.

The spelling of 103997987 in words is "one hundred three million, nine hundred ninety-seven thousand, nine hundred eighty-seven".