89717409 has 8 divisors (see below), whose sum is σ = 132914720. Its totient is φ = 59811588.

The previous prime is 89717371. The next prime is 89717417. The reversal of 89717409 is 90471798.

It is not a de Polignac number, because 89717409 - 2¹⁹ = 89193121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89717209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661407 + ... + 1661460.

It is an arithmetic number, because the mean of its divisors is an integer number (16614340).

Almost surely, 2^89717409 is an apocalyptic number.

It is an amenable number.

89717409 is a deficient number, since it is larger than the sum of its proper divisors (43197311).

89717409 is a wasteful number, since it uses less digits than its factorization.

89717409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322876 (or 3322870 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 89717409 is about 9471.9274173739. The cubic root of 89717409 is about 447.6709441272.

The spelling of 89717409 in words is "eighty-nine million, seven hundred seventeen thousand, four hundred nine".