9778893 has 12 divisors (see below), whose sum is σ = 13851840. Its totient is φ = 6135232.

The previous prime is 9778891. The next prime is 9778897. The reversal of 9778893 is 3988779.

It is a happy number.

It is not a de Polignac number, because 9778893 - 2¹ = 9778891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9778891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4773 + ... + 6506.

It is an arithmetic number, because the mean of its divisors is an integer number (1154320).

Almost surely, 2^9778893 is an apocalyptic number.

It is an amenable number.

9778893 is a deficient number, since it is larger than the sum of its proper divisors (4072947).

9778893 is a wasteful number, since it uses less digits than its factorization.

9778893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316 (or 11299 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 9778893 is about 3127.1221594303. The cubic root of 9778893 is about 213.8437514942.

It can be divided in two parts, 977 and 8893, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 9778893 in words is "nine million, seven hundred seventy-eight thousand, eight hundred ninety-three".