88869569 has 2 divisors, whose sum is σ = 88869570. Its totient is φ = 88869568.

The previous prime is 88869559. The next prime is 88869577. The reversal of 88869569 is 96596888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87179569 + 1690000 = 9337^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 88869569 - 2¹² = 88865473 is a prime.

It is a super-2 number, since 2×88869569² = 15795600588491522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (88869559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44434784 + 44434785.

It is an arithmetic number, because the mean of its divisors is an integer number (44434785).

Almost surely, 2^88869569 is an apocalyptic number.

It is an amenable number.

88869569 is a deficient number, since it is larger than the sum of its proper divisors (1).

88869569 is an equidigital number, since it uses as much as digits as its factorization.

88869569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 59.

The square root of 88869569 is about 9427.0657683078. The cubic root of 88869569 is about 446.2562976198.

The spelling of 88869569 in words is "eighty-eight million, eight hundred sixty-nine thousand, five hundred sixty-nine".