9742343989 has 4 divisors (see below), whose sum is σ = 11134107424. Its totient is φ = 8350580556.

The previous prime is 9742343987. The next prime is 9742344011. The reversal of 9742343989 is 9893432479.

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.

It is a cyclic number.

It is not a de Polignac number, because 9742343989 - 2¹ = 9742343987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9742343981) 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, 695881707 + ... + 695881720.

It is an arithmetic number, because the mean of its divisors is an integer number (2783526856).

Almost surely, 2^9742343989 is an apocalyptic number.

It is an amenable number.

9742343989 is a deficient number, since it is larger than the sum of its proper divisors (1391763435).

9742343989 is a wasteful number, since it uses less digits than its factorization.

9742343989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391763434.

The product of its digits is 11757312, while the sum is 58.

The square root of 9742343989 is about 98703.3129585831. The cubic root of 9742343989 is about 2135.7700231114.

The spelling of 9742343989 in words is "nine billion, seven hundred forty-two million, three hundred forty-three thousand, nine hundred eighty-nine".