88394561 has 2 divisors, whose sum is σ = 88394562. Its totient is φ = 88394560.

The previous prime is 88394557. The next prime is 88394573. The reversal of 88394561 is 16549388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76457536 + 11937025 = 8744^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 88394561 - 2² = 88394557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88394521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44197280 + 44197281.

It is an arithmetic number, because the mean of its divisors is an integer number (44197281).

Almost surely, 2^88394561 is an apocalyptic number.

It is an amenable number.

88394561 is a deficient number, since it is larger than the sum of its proper divisors (1).

88394561 is an equidigital number, since it uses as much as digits as its factorization.

88394561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 88394561 is about 9401.8381713365. The cubic root of 88394561 is about 445.4597966024.

The spelling of 88394561 in words is "eighty-eight million, three hundred ninety-four thousand, five hundred sixty-one".