9709442457 has 16 divisors (see below), whose sum is σ = 15209197248. Its totient is φ = 5431855680.

The previous prime is 9709442437. The next prime is 9709442461. The reversal of 9709442457 is 7542449079.

It is not a de Polignac number, because 9709442457 - 2²³ = 9701053849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9709442437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11315938 + ... + 11316795.

It is an arithmetic number, because the mean of its divisors is an integer number (950574828).

Almost surely, 2^9709442457 is an apocalyptic number.

It is an amenable number.

9709442457 is a deficient number, since it is larger than the sum of its proper divisors (5499754791).

9709442457 is a wasteful number, since it uses less digits than its factorization.

9709442457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22632760.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The square root of 9709442457 is about 98536.5031701450. The cubic root of 9709442457 is about 2133.3630267650.

The spelling of 9709442457 in words is "nine billion, seven hundred nine million, four hundred forty-two thousand, four hundred fifty-seven".