85927421 has 4 divisors (see below), whose sum is σ = 87755712. Its totient is φ = 84099132.

The previous prime is 85927409. The next prime is 85927427. The reversal of 85927421 is 12472958.

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 85927421 - 2¹⁴ = 85911037 is a prime.

It is a super-2 number, since 2×85927421² = 14767043359422482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85927427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914075 + ... + 914168.

It is an arithmetic number, because the mean of its divisors is an integer number (21938928).

Almost surely, 2^85927421 is an apocalyptic number.

It is an amenable number.

85927421 is a deficient number, since it is larger than the sum of its proper divisors (1828291).

85927421 is a wasteful number, since it uses less digits than its factorization.

85927421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828290.

The product of its digits is 40320, while the sum is 38.

The square root of 85927421 is about 9269.7044720962. The cubic root of 85927421 is about 441.2762891778.

The spelling of 85927421 in words is "eighty-five million, nine hundred twenty-seven thousand, four hundred twenty-one".