86194421 has 4 divisors (see below), whose sum is σ = 87232992. Its totient is φ = 85155852.

The previous prime is 86194411. The next prime is 86194429. The reversal of 86194421 is 12449168.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86194421 - 2⁶ = 86194357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86194429) 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, 519161 + ... + 519326.

It is an arithmetic number, because the mean of its divisors is an integer number (21808248).

Almost surely, 2^86194421 is an apocalyptic number.

It is an amenable number.

86194421 is a deficient number, since it is larger than the sum of its proper divisors (1038571).

86194421 is a wasteful number, since it uses less digits than its factorization.

86194421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038570.

The product of its digits is 13824, while the sum is 35.

The square root of 86194421 is about 9284.0950555237. The cubic root of 86194421 is about 441.7328719709.

The spelling of 86194421 in words is "eighty-six million, one hundred ninety-four thousand, four hundred twenty-one".