86909393 has 8 divisors (see below), whose sum is σ = 87790080. Its totient is φ = 86033520.

The previous prime is 86909357. The next prime is 86909413. The reversal of 86909393 is 39390968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86909393 - 2¹⁶ = 86843857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86909353) 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, 42746 + ... + 44732.

It is an arithmetic number, because the mean of its divisors is an integer number (10973760).

Almost surely, 2^86909393 is an apocalyptic number.

It is an amenable number.

86909393 is a deficient number, since it is larger than the sum of its proper divisors (880687).

86909393 is a wasteful number, since it uses less digits than its factorization.

86909393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 86909393 is about 9322.5207428034. The cubic root of 86909393 is about 442.9508834763.

The spelling of 86909393 in words is "eighty-six million, nine hundred nine thousand, three hundred ninety-three".