9478657 has 4 divisors (see below), whose sum is σ = 9598720. Its totient is φ = 9358596.

The previous prime is 9478643. The next prime is 9478681. The reversal of 9478657 is 7568749.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7568749 = 103 ⋅73483.

It is a cyclic number.

It is not a de Polignac number, because 9478657 - 2¹⁵ = 9445889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9478627) 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, 59913 + ... + 60070.

It is an arithmetic number, because the mean of its divisors is an integer number (2399680).

Almost surely, 2^9478657 is an apocalyptic number.

It is an amenable number.

9478657 is a deficient number, since it is larger than the sum of its proper divisors (120063).

9478657 is a wasteful number, since it uses less digits than its factorization.

9478657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120062.

The product of its digits is 423360, while the sum is 46.

The square root of 9478657 is about 3078.7427628823. The cubic root of 9478657 is about 211.6324547044.

It can be divided in two parts, 947 and 8657, that added together give a square (9604 = 98²).

The spelling of 9478657 in words is "nine million, four hundred seventy-eight thousand, six hundred fifty-seven".