85909417 has 4 divisors (see below), whose sum is σ = 93719376. Its totient is φ = 78099460.

The previous prime is 85909387. The next prime is 85909433. The reversal of 85909417 is 71490958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85909417 - 2¹⁵ = 85876649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85909457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3904963 + ... + 3904984.

It is an arithmetic number, because the mean of its divisors is an integer number (23429844).

Almost surely, 2^85909417 is an apocalyptic number.

It is an amenable number.

85909417 is a deficient number, since it is larger than the sum of its proper divisors (7809959).

85909417 is a wasteful number, since it uses less digits than its factorization.

85909417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7809958.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 85909417 is about 9268.7333007267. The cubic root of 85909417 is about 441.2454674558.

The spelling of 85909417 in words is "eighty-five million, nine hundred nine thousand, four hundred seventeen".