85884421 has 16 divisors (see below), whose sum is σ = 99551488. Its totient is φ = 72576000.

The previous prime is 85884367. The next prime is 85884431. The reversal of 85884421 is 12448858.

It is not a de Polignac number, because 85884421 - 2¹³ = 85876229 is a prime.

It is a super-2 number, since 2×85884421² = 14752267541010482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85884431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203791 + ... + 204211.

It is an arithmetic number, because the mean of its divisors is an integer number (6221968).

Almost surely, 2^85884421 is an apocalyptic number.

It is an amenable number.

85884421 is a deficient number, since it is larger than the sum of its proper divisors (13667067).

85884421 is a wasteful number, since it uses less digits than its factorization.

85884421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its digits is 81920, while the sum is 40.

The square root of 85884421 is about 9267.3847983128. The cubic root of 85884421 is about 441.2026687268.

The spelling of 85884421 in words is "eighty-five million, eight hundred eighty-four thousand, four hundred twenty-one".