9779490 has 144 divisors (see below), whose sum is σ = 31382208. Its totient is φ = 2068416.

The previous prime is 9779453. The next prime is 9779491. The reversal of 9779490 is 949779.

9779490 is a `hidden beast` number, since 97 + 79 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9779491) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 227409 + ... + 227451.

It is an arithmetic number, because the mean of its divisors is an integer number (217932).

Almost surely, 2^9779490 is an apocalyptic number.

9779490 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9779490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15691104).

9779490 is an abundant number, since it is smaller than the sum of its proper divisors (21602718).

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

9779490 is a wasteful number, since it uses less digits than its factorization.

9779490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 9779490 is about 3127.2176131507. The cubic root of 9779490 is about 213.8481031157.

The spelling of 9779490 in words is "nine million, seven hundred seventy-nine thousand, four hundred ninety".