989151101 has 2 divisors, whose sum is σ = 989151102. Its totient is φ = 989151100.

The previous prime is 989151067. The next prime is 989151113. The reversal of 989151101 is 101151989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 825183076 + 163968025 = 28726^2 + 12805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989151101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989151161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494575550 + 494575551.

It is an arithmetic number, because the mean of its divisors is an integer number (494575551).

Almost surely, 2^989151101 is an apocalyptic number.

It is an amenable number.

989151101 is a deficient number, since it is larger than the sum of its proper divisors (1).

989151101 is an equidigital number, since it uses as much as digits as its factorization.

989151101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 989151101 is about 31450.7726614149. The cubic root of 989151101 is about 996.3705433144.

The spelling of 989151101 in words is "nine hundred eighty-nine million, one hundred fifty-one thousand, one hundred one".