9709457 has 4 divisors (see below), whose sum is σ = 9724980. Its totient is φ = 9693936.

The previous prime is 9709411. The next prime is 9709477. The reversal of 9709457 is 7549079.

It is a happy number.

It is a Cunningham number, because it is equal to 3116²+1.

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 2262016 + 7447441 = 1504^2 + 2729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9709457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9709477) 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, 6782 + ... + 8087.

It is an arithmetic number, because the mean of its divisors is an integer number (2431245).

Almost surely, 2^9709457 is an apocalyptic number.

It is an amenable number.

9709457 is a deficient number, since it is larger than the sum of its proper divisors (15523).

9709457 is a wasteful number, since it uses less digits than its factorization.

9709457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15522.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 9709457 is about 3116.0001604621. Note that the first 3 decimals coincide. The cubic root of 9709457 is about 213.3364091896.

The spelling of 9709457 in words is "nine million, seven hundred nine thousand, four hundred fifty-seven".