107877989 has 2 divisors, whose sum is σ = 107877990. Its totient is φ = 107877988.

The previous prime is 107877947. The next prime is 107878003. The reversal of 107877989 is 989778701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81180100 + 26697889 = 9010^2 + 5167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107877989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107877689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53938994 + 53938995.

It is an arithmetic number, because the mean of its divisors is an integer number (53938995).

Almost surely, 2^107877989 is an apocalyptic number.

It is an amenable number.

107877989 is a deficient number, since it is larger than the sum of its proper divisors (1).

107877989 is an equidigital number, since it uses as much as digits as its factorization.

107877989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 56.

The square root of 107877989 is about 10386.4329295480. The cubic root of 107877989 is about 476.0409143209.

The spelling of 107877989 in words is "one hundred seven million, eight hundred seventy-seven thousand, nine hundred eighty-nine".