85447974 has 16 divisors (see below), whose sum is σ = 174532608. Its totient is φ = 27876552.

The previous prime is 85447969. The next prime is 85447991. The reversal of 85447974 is 47974458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151222 + ... + 151785.

It is an arithmetic number, because the mean of its divisors is an integer number (10908288).

Almost surely, 2^85447974 is an apocalyptic number.

85447974 is an abundant number, since it is smaller than the sum of its proper divisors (89084634).

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

85447974 is a wasteful number, since it uses less digits than its factorization.

85447974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303059.

The product of its digits is 1128960, while the sum is 48.

The square root of 85447974 is about 9243.8073324794. The cubic root of 85447974 is about 440.4540320160.

It can be divided in two parts, 854 and 47974, that added together give a triangular number (48828 = T₃₁₂).

The spelling of 85447974 in words is "eighty-five million, four hundred forty-seven thousand, nine hundred seventy-four".