9906023 has 4 divisors (see below), whose sum is σ = 10247640. Its totient is φ = 9564408.

The previous prime is 9906007. The next prime is 9906079. The reversal of 9906023 is 3206099.

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 9906023 - 2⁴ = 9906007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 341587 = 9906023 / (9 + 9 + 0 + 6 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902023) 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, 170765 + ... + 170822.

It is an arithmetic number, because the mean of its divisors is an integer number (2561910).

Almost surely, 2^9906023 is an apocalyptic number.

9906023 is a deficient number, since it is larger than the sum of its proper divisors (341617).

9906023 is a wasteful number, since it uses less digits than its factorization.

9906023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341616.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 9906023 is about 3147.3835165102. The cubic root of 9906023 is about 214.7664527250.

The spelling of 9906023 in words is "nine million, nine hundred six thousand, twenty-three".