985240901 has 2 divisors, whose sum is σ = 985240902. Its totient is φ = 985240900.

The previous prime is 985240891. The next prime is 985240937. The reversal of 985240901 is 109042589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777852100 + 207388801 = 27890^2 + 14401^2 .

It is a cyclic number.

It is not a de Polignac number, because 985240901 - 2¹⁰ = 985239877 is a prime.

It is a Sophie Germain 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 (985243901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492620450 + 492620451.

It is an arithmetic number, because the mean of its divisors is an integer number (492620451).

Almost surely, 2^985240901 is an apocalyptic number.

It is an amenable number.

985240901 is a deficient number, since it is larger than the sum of its proper divisors (1).

985240901 is an equidigital number, since it uses as much as digits as its factorization.

985240901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 985240901 is about 31388.5472903733. The cubic root of 985240901 is about 995.0558964583.

The spelling of 985240901 in words is "nine hundred eighty-five million, two hundred forty thousand, nine hundred one".