107751989 has 2 divisors, whose sum is σ = 107751990. Its totient is φ = 107751988.

The previous prime is 107751953. The next prime is 107751991. The reversal of 107751989 is 989157701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63329764 + 44422225 = 7958^2 + 6665^2 .

It is a cyclic number.

It is not a de Polignac number, because 107751989 - 2²⁰ = 106703413 is a prime.

It is a super-2 number, since 2×107751989² = 23220982266912242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 107751991, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107751089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53875994 + 53875995.

It is an arithmetic number, because the mean of its divisors is an integer number (53875995).

Almost surely, 2^107751989 is an apocalyptic number.

It is an amenable number.

107751989 is a deficient number, since it is larger than the sum of its proper divisors (1).

107751989 is an equidigital number, since it uses as much as digits as its factorization.

107751989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 107751989 is about 10380.3655523300. The cubic root of 107751989 is about 475.8555057146.

The spelling of 107751989 in words is "one hundred seven million, seven hundred fifty-one thousand, nine hundred eighty-nine".