9442739 has 4 divisors (see below), whose sum is σ = 9597600. Its totient is φ = 9287880.

The previous prime is 9442729. The next prime is 9442747. The reversal of 9442739 is 9372449.

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

It is a cyclic number.

It is not a de Polignac number, because 9442739 - 2²⁰ = 8394163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9442709) 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, 77339 + ... + 77460.

It is an arithmetic number, because the mean of its divisors is an integer number (2399400).

Almost surely, 2^9442739 is an apocalyptic number.

9442739 is a deficient number, since it is larger than the sum of its proper divisors (154861).

9442739 is a wasteful number, since it uses less digits than its factorization.

9442739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154860.

The product of its digits is 54432, while the sum is 38.

The square root of 9442739 is about 3072.9040011038. The cubic root of 9442739 is about 211.3647994779.

The spelling of 9442739 in words is "nine million, four hundred forty-two thousand, seven hundred thirty-nine".