86278403 has 4 divisors (see below), whose sum is σ = 86534760. Its totient is φ = 86022048.

The previous prime is 86278399. The next prime is 86278421. The reversal of 86278403 is 30487268.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86278403 - 2² = 86278399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86278433) 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, 127673 + ... + 128346.

It is an arithmetic number, because the mean of its divisors is an integer number (21633690).

Almost surely, 2^86278403 is an apocalyptic number.

86278403 is a deficient number, since it is larger than the sum of its proper divisors (256357).

86278403 is a wasteful number, since it uses less digits than its factorization.

86278403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256356.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 86278403 is about 9288.6168507480. The cubic root of 86278403 is about 441.8762902559.

The spelling of 86278403 in words is "eighty-six million, two hundred seventy-eight thousand, four hundred three".