9906020441 has 4 divisors (see below), whose sum is σ = 9906309300. Its totient is φ = 9905731584.

The previous prime is 9906020431. The next prime is 9906020461. The reversal of 9906020441 is 1440206099.

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

It can be written as a sum of positive squares in 2 ways, for example, as 748296025 + 9157724416 = 27355^2 + 95696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9906020441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906020431) 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, 84776 + ... + 164313.

It is an arithmetic number, because the mean of its divisors is an integer number (2476577325).

Almost surely, 2^9906020441 is an apocalyptic number.

It is an amenable number.

9906020441 is a deficient number, since it is larger than the sum of its proper divisors (288859).

9906020441 is a wasteful number, since it uses less digits than its factorization.

9906020441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288858.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 9906020441 is about 99528.9929668737. The cubic root of 9906020441 is about 2147.6643423167.

The spelling of 9906020441 in words is "nine billion, nine hundred six million, twenty thousand, four hundred forty-one".