985005784 has 16 divisors (see below), whose sum is σ = 2110726800. Its totient is φ = 422145312.

The previous prime is 985005781. The next prime is 985005799. The reversal of 985005784 is 487500589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985005781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8794639 + ... + 8794750.

It is an arithmetic number, because the mean of its divisors is an integer number (131920425).

Almost surely, 2^985005784 is an apocalyptic number.

It is an amenable number.

985005784 is an abundant number, since it is smaller than the sum of its proper divisors (1125721016).

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

985005784 is a wasteful number, since it uses less digits than its factorization.

985005784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17589402 (or 17589398 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 985005784 is about 31384.8017995972. The cubic root of 985005784 is about 994.9767370806.

It can be divided in two parts, 9850057 and 84, that added together give a triangular number (9850141 = T₄₄₃₈).

The spelling of 985005784 in words is "nine hundred eighty-five million, five thousand, seven hundred eighty-four".