86129433 has 16 divisors (see below), whose sum is σ = 137415040. Its totient is φ = 53002512.

The previous prime is 86129431. The next prime is 86129441. The reversal of 86129433 is 33492168.

86129433 is a `hidden beast` number, since 8 + 612 + 9 + 4 + 33 = 666.

It is not a de Polignac number, because 86129433 - 2¹ = 86129431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86129431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122341 + ... + 123042.

It is an arithmetic number, because the mean of its divisors is an integer number (8588440).

Almost surely, 2^86129433 is an apocalyptic number.

It is an amenable number.

86129433 is a deficient number, since it is larger than the sum of its proper divisors (51285607).

86129433 is a wasteful number, since it uses less digits than its factorization.

86129433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245405 (or 245399 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 86129433 is about 9280.5944313929. The cubic root of 86129433 is about 441.6218262930.

The spelling of 86129433 in words is "eighty-six million, one hundred twenty-nine thousand, four hundred thirty-three".