86429257 has 8 divisors (see below), whose sum is σ = 87497280. Its totient is φ = 85365840.

The previous prime is 86429249. The next prime is 86429267. The reversal of 86429257 is 75292468.

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 86429257 - 2³ = 86429249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86429237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49719 + ... + 51427.

It is an arithmetic number, because the mean of its divisors is an integer number (10937160).

Almost surely, 2^86429257 is an apocalyptic number.

It is an amenable number.

86429257 is a deficient number, since it is larger than the sum of its proper divisors (1068023).

86429257 is a wasteful number, since it uses less digits than its factorization.

86429257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303.

The product of its digits is 241920, while the sum is 43.

The square root of 86429257 is about 9296.7336737157. The cubic root of 86429257 is about 442.1336740710.

The spelling of 86429257 in words is "eighty-six million, four hundred twenty-nine thousand, two hundred fifty-seven".