69971089 has 2 divisors, whose sum is σ = 69971090. Its totient is φ = 69971088.

The previous prime is 69971063. The next prime is 69971117. The reversal of 69971089 is 98017996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41796225 + 28174864 = 6465^2 + 5308^2 .

It is a cyclic number.

It is not a de Polignac number, because 69971089 - 2⁷ = 69970961 is a prime.

It is not a weakly prime, because it can be changed into another prime (69971039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34985544 + 34985545.

It is an arithmetic number, because the mean of its divisors is an integer number (34985545).

Almost surely, 2^69971089 is an apocalyptic number.

It is an amenable number.

69971089 is a deficient number, since it is larger than the sum of its proper divisors (1).

69971089 is an equidigital number, since it uses as much as digits as its factorization.

69971089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 69971089 is about 8364.8723241900. The cubic root of 69971089 is about 412.0717838443.

The spelling of 69971089 in words is "sixty-nine million, nine hundred seventy-one thousand, eighty-nine".