85191384 has 16 divisors (see below), whose sum is σ = 212978520. Its totient is φ = 28397120.

The previous prime is 85191377. The next prime is 85191413. The reversal of 85191384 is 48319158.

It is a super-3 number, since 3×85191384³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774797 + ... + 1774844.

Almost surely, 2^85191384 is an apocalyptic number.

It is an amenable number.

85191384 is an abundant number, since it is smaller than the sum of its proper divisors (127787136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85191384 is a wasteful number, since it uses less digits than its factorization.

85191384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549650 (or 3549646 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 85191384 is about 9229.9178761244. The cubic root of 85191384 is about 440.0127131313.

It can be divided in two parts, 851 and 91384, that added together give a triangular number (92235 = T₄₂₉).

The spelling of 85191384 in words is "eighty-five million, one hundred ninety-one thousand, three hundred eighty-four".