85974047 has 4 divisors (see below), whose sum is σ = 86651136. Its totient is φ = 85296960.

The previous prime is 85974037. The next prime is 85974061. The reversal of 85974047 is 74047958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74047958 = 2 ⋅37023979.

It is a cyclic number.

It is not a de Polignac number, because 85974047 - 2¹² = 85969951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85973989 and 85974007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85974037) 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, 338354 + ... + 338607.

It is an arithmetic number, because the mean of its divisors is an integer number (21662784).

Almost surely, 2^85974047 is an apocalyptic number.

85974047 is a deficient number, since it is larger than the sum of its proper divisors (677089).

85974047 is a wasteful number, since it uses less digits than its factorization.

85974047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677088.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 85974047 is about 9272.2190979290. The cubic root of 85974047 is about 441.3560899666.

The spelling of 85974047 in words is "eighty-five million, nine hundred seventy-four thousand, forty-seven".