48891109 has 2 divisors, whose sum is σ = 48891110. Its totient is φ = 48891108.

The previous prime is 48891107. The next prime is 48891119. The reversal of 48891109 is 90119884.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47568609 + 1322500 = 6897^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 48891109 - 2¹ = 48891107 is a prime.

Together with 48891107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48891103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24445554 + 24445555.

It is an arithmetic number, because the mean of its divisors is an integer number (24445555).

Almost surely, 2^48891109 is an apocalyptic number.

It is an amenable number.

48891109 is a deficient number, since it is larger than the sum of its proper divisors (1).

48891109 is an equidigital number, since it uses as much as digits as its factorization.

48891109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 48891109 is about 6992.2177454653. The cubic root of 48891109 is about 365.6593050238.

The spelling of 48891109 in words is "forty-eight million, eight hundred ninety-one thousand, one hundred nine".