86429890 has 8 divisors (see below), whose sum is σ = 155573820. Its totient is φ = 34571952.

The previous prime is 86429873. The next prime is 86429897. The reversal of 86429890 is 9892468.

It can be written as a sum of positive squares in 2 ways, for example, as 70341769 + 16088121 = 8387^2 + 4011^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 86429890.

It is not an unprimeable number, because it can be changed into a prime (86429897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4321485 + ... + 4321504.

Almost surely, 2^86429890 is an apocalyptic number.

86429890 is a deficient number, since it is larger than the sum of its proper divisors (69143930).

86429890 is a wasteful number, since it uses less digits than its factorization.

86429890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642996.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 86429890 is about 9296.7677178684. The cubic root of 86429890 is about 442.1347534506.

The spelling of 86429890 in words is "eighty-six million, four hundred twenty-nine thousand, eight hundred ninety".