9424639 has 4 divisors (see below), whose sum is σ = 10771024. Its totient is φ = 8078256.

The previous prime is 9424609. The next prime is 9424643. The reversal of 9424639 is 9364249.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9364249 = 1601 ⋅5849.

It is a cyclic number.

It is not a de Polignac number, because 9424639 - 2⁵ = 9424607 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9424598 and 9424607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9424609) 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, 673182 + ... + 673195.

It is an arithmetic number, because the mean of its divisors is an integer number (2692756).

Almost surely, 2^9424639 is an apocalyptic number.

9424639 is a deficient number, since it is larger than the sum of its proper divisors (1346385).

9424639 is a wasteful number, since it uses less digits than its factorization.

9424639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346384.

The product of its digits is 46656, while the sum is 37.

The square root of 9424639 is about 3069.9574915624. The cubic root of 9424639 is about 211.2296639038.

The spelling of 9424639 in words is "nine million, four hundred twenty-four thousand, six hundred thirty-nine".