999258101 has 2 divisors, whose sum is σ = 999258102. Its totient is φ = 999258100.

The previous prime is 999258083. The next prime is 999258119. The reversal of 999258101 is 101852999.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (999258083) and next prime (999258119).

It can be written as a sum of positive squares in only one way, i.e., 839260900 + 159997201 = 28970^2 + 12649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999258101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999258151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499629050 + 499629051.

It is an arithmetic number, because the mean of its divisors is an integer number (499629051).

Almost surely, 2^999258101 is an apocalyptic number.

It is an amenable number.

999258101 is a deficient number, since it is larger than the sum of its proper divisors (1).

999258101 is an equidigital number, since it uses as much as digits as its factorization.

999258101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 999258101 is about 31611.0439720045. The cubic root of 999258101 is about 999.7526391510.

The spelling of 999258101 in words is "nine hundred ninety-nine million, two hundred fifty-eight thousand, one hundred one".