989697139201 has 2 divisors, whose sum is σ = 989697139202. Its totient is φ = 989697139200.

The previous prime is 989697139157. The next prime is 989697139213. The reversal of 989697139201 is 102931796989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 985383802225 + 4313336976 = 992665^2 + 65676^2 .

It is a cyclic number.

It is not a de Polignac number, because 989697139201 - 2¹³ = 989697131009 is a prime.

It is not a weakly prime, because it can be changed into another prime (989697439201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494848569600 + 494848569601.

It is an arithmetic number, because the mean of its divisors is an integer number (494848569601).

Almost surely, 2^989697139201 is an apocalyptic number.

It is an amenable number.

989697139201 is a deficient number, since it is larger than the sum of its proper divisors (1).

989697139201 is an equidigital number, since it uses as much as digits as its factorization.

989697139201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The spelling of 989697139201 in words is "nine hundred eighty-nine billion, six hundred ninety-seven million, one hundred thirty-nine thousand, two hundred one".