103948991 has 2 divisors, whose sum is σ = 103948992. Its totient is φ = 103948990.

The previous prime is 103948927. The next prime is 103949003. The reversal of 103948991 is 199849301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 103948991 - 2⁶ = 103948927 is a prime.

It is a Chen prime.

It is equal to p_5975657 and since 103948991 and 5975657 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103945991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51974495 + 51974496.

It is an arithmetic number, because the mean of its divisors is an integer number (51974496).

Almost surely, 2^103948991 is an apocalyptic number.

103948991 is a deficient number, since it is larger than the sum of its proper divisors (1).

103948991 is an equidigital number, since it uses as much as digits as its factorization.

103948991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 103948991 is about 10195.5377984685. The cubic root of 103948991 is about 470.1900408484.

The spelling of 103948991 in words is "one hundred three million, nine hundred forty-eight thousand, nine hundred ninety-one".