109613887 has 2 divisors, whose sum is σ = 109613888. Its totient is φ = 109613886.

The previous prime is 109613813. The next prime is 109613891. The reversal of 109613887 is 788316901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109613887 - 2⁷ = 109613759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109613897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54806943 + 54806944.

It is an arithmetic number, because the mean of its divisors is an integer number (54806944).

Almost surely, 2^109613887 is an apocalyptic number.

109613887 is a deficient number, since it is larger than the sum of its proper divisors (1).

109613887 is an equidigital number, since it uses as much as digits as its factorization.

109613887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 109613887 is about 10469.6650853788. The cubic root of 109613887 is about 478.5807134839.

The spelling of 109613887 in words is "one hundred nine million, six hundred thirteen thousand, eight hundred eighty-seven".