9920801 has 4 divisors (see below), whose sum is σ = 10822704. Its totient is φ = 9018900.

The previous prime is 9920783. The next prime is 9920803. The reversal of 9920801 is 1080299.

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 not a de Polignac number, because 9920801 - 2⁶ = 9920737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9920803) 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, 450935 + ... + 450956.

It is an arithmetic number, because the mean of its divisors is an integer number (2705676).

Almost surely, 2^9920801 is an apocalyptic number.

It is an amenable number.

9920801 is a deficient number, since it is larger than the sum of its proper divisors (901903).

9920801 is a wasteful number, since it uses less digits than its factorization.

9920801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901902.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 9920801 is about 3149.7303059151. The cubic root of 9920801 is about 214.8731972679.

The spelling of 9920801 in words is "nine million, nine hundred twenty thousand, eight hundred one".