840585474 has 48 divisors (see below), whose sum is σ = 1888286400. Its totient is φ = 269928288.

The previous prime is 840585469. The next prime is 840585481. The reversal of 840585474 is 474585048.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271467 + ... + 274545.

It is an arithmetic number, because the mean of its divisors is an integer number (39339300).

Almost surely, 2^840585474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840585474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944143200).

840585474 is an abundant number, since it is smaller than the sum of its proper divisors (1047700926).

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

840585474 is a wasteful number, since it uses less digits than its factorization.

840585474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639 (or 3636 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 45.

The square root of 840585474 is about 28992.8521191000. The cubic root of 840585474 is about 943.7579584201.

The spelling of 840585474 in words is "eight hundred forty million, five hundred eighty-five thousand, four hundred seventy-four".