69289889 has 2 divisors, whose sum is σ = 69289890. Its totient is φ = 69289888.

The previous prime is 69289879. The next prime is 69289897. The reversal of 69289889 is 98898296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 5017600 = 8017^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 69289889 - 2²⁴ = 52512673 is a prime.

It is not a weakly prime, because it can be changed into another prime (69289819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34644944 + 34644945.

It is an arithmetic number, because the mean of its divisors is an integer number (34644945).

Almost surely, 2^69289889 is an apocalyptic number.

It is an amenable number.

69289889 is a deficient number, since it is larger than the sum of its proper divisors (1).

69289889 is an equidigital number, since it uses as much as digits as its factorization.

69289889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 59.

The square root of 69289889 is about 8324.0548412417. The cubic root of 69289889 is about 410.7301860194.

The spelling of 69289889 in words is "sixty-nine million, two hundred eighty-nine thousand, eight hundred eighty-nine".