9779742 has 24 divisors (see below), whose sum is σ = 24216816. Its totient is φ = 2794176.

The previous prime is 9779741. The next prime is 9779779. The reversal of 9779742 is 2479779.

It is a happy number.

9779742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9779741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38683 + ... + 38934.

It is an arithmetic number, because the mean of its divisors is an integer number (1009034).

Almost surely, 2^9779742 is an apocalyptic number.

9779742 is an abundant number, since it is smaller than the sum of its proper divisors (14437074).

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

9779742 is a wasteful number, since it uses less digits than its factorization.

9779742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77632 (or 77629 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 9779742 is about 3127.2579042989. The cubic root of 9779742 is about 213.8499399278.

The spelling of 9779742 in words is "nine million, seven hundred seventy-nine thousand, seven hundred forty-two".