88039405409 has 2 divisors, whose sum is σ = 88039405410. Its totient is φ = 88039405408.

The previous prime is 88039405369. The next prime is 88039405453. The reversal of 88039405409 is 90450493088.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85348701025 + 2690704384 = 292145^2 + 51872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88039405409 is a prime.

It is not a weakly prime, because it can be changed into another prime (88039405609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44019702704 + 44019702705.

It is an arithmetic number, because the mean of its divisors is an integer number (44019702705).

Almost surely, 2^88039405409 is an apocalyptic number.

It is an amenable number.

88039405409 is a deficient number, since it is larger than the sum of its proper divisors (1).

88039405409 is an equidigital number, since it uses as much as digits as its factorization.

88039405409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 88039405409 in words is "eighty-eight billion, thirty-nine million, four hundred five thousand, four hundred nine".