86421386 has 8 divisors (see below), whose sum is σ = 136454880. Its totient is φ = 40936428.

The previous prime is 86421337. The next prime is 86421389. The reversal of 86421386 is 68312468.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 2274247 = 86421386 / (8 + 6 + 4 + 2 + 1 + 3 + 8 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86421389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137086 + ... + 1137161.

It is an arithmetic number, because the mean of its divisors is an integer number (17056860).

Almost surely, 2^86421386 is an apocalyptic number.

86421386 is a deficient number, since it is larger than the sum of its proper divisors (50033494).

86421386 is a wasteful number, since it uses less digits than its factorization.

86421386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274268.

The product of its digits is 55296, while the sum is 38.

The square root of 86421386 is about 9296.3103433567. The cubic root of 86421386 is about 442.1202521507.

The spelling of 86421386 in words is "eighty-six million, four hundred twenty-one thousand, three hundred eighty-six".