9778490 has 8 divisors (see below), whose sum is σ = 17601300. Its totient is φ = 3911392.

The previous prime is 9778487. The next prime is 9778523. The reversal of 9778490 is 948779.

9778490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9778129 + 361 = 3127^2 + 19^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488915 + ... + 488934.

Almost surely, 2^9778490 is an apocalyptic number.

9778490 is a deficient number, since it is larger than the sum of its proper divisors (7822810).

9778490 is a wasteful number, since it uses less digits than its factorization.

9778490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977856.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 9778490 is about 3127.0577225245. The cubic root of 9778490 is about 213.8408138674.

It can be divided in two parts, 97 and 78490, that added together give a palindrome (78587).

The spelling of 9778490 in words is "nine million, seven hundred seventy-eight thousand, four hundred ninety".