9478789 has 4 divisors (see below), whose sum is σ = 9531340. Its totient is φ = 9426240.

The previous prime is 9478787. The next prime is 9478793. The reversal of 9478789 is 9878749.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2666689 + 6812100 = 1633^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 9478789 - 2¹ = 9478787 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9478787) 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, 26004 + ... + 26365.

It is an arithmetic number, because the mean of its divisors is an integer number (2382835).

Almost surely, 2^9478789 is an apocalyptic number.

It is an amenable number.

9478789 is a deficient number, since it is larger than the sum of its proper divisors (52551).

9478789 is a wasteful number, since it uses less digits than its factorization.

9478789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52550.

The product of its digits is 1016064, while the sum is 52.

The square root of 9478789 is about 3078.7642001297. The cubic root of 9478789 is about 211.6334370993.

The spelling of 9478789 in words is "nine million, four hundred seventy-eight thousand, seven hundred eighty-nine".