86117409 has 12 divisors (see below), whose sum is σ = 142162176. Its totient is φ = 49209912.

The previous prime is 86117407. The next prime is 86117417. The reversal of 86117409 is 90471168.

It is not a de Polignac number, because 86117409 - 2¹ = 86117407 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86117401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683409 + ... + 683534.

It is an arithmetic number, because the mean of its divisors is an integer number (11846848).

Almost surely, 2^86117409 is an apocalyptic number.

It is an amenable number.

86117409 is a deficient number, since it is larger than the sum of its proper divisors (56044767).

86117409 is a wasteful number, since it uses less digits than its factorization.

86117409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366956 (or 1366953 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 86117409 is about 9279.9466054498. The cubic root of 86117409 is about 441.6012746350.

The spelling of 86117409 in words is "eighty-six million, one hundred seventeen thousand, four hundred nine".