9920541 has 4 divisors (see below), whose sum is σ = 13227392. Its totient is φ = 6613692.

The previous prime is 9920539. The next prime is 9920543. The reversal of 9920541 is 1450299.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1450299 = 3 ⋅483433.

It is an interprime number because it is at equal distance from previous prime (9920539) and next prime (9920543).

It is not a de Polignac number, because 9920541 - 2¹ = 9920539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9920499 and 9920508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653421 + ... + 1653426.

It is an arithmetic number, because the mean of its divisors is an integer number (3306848).

Almost surely, 2^9920541 is an apocalyptic number.

It is an amenable number.

9920541 is a deficient number, since it is larger than the sum of its proper divisors (3306851).

9920541 is a wasteful number, since it uses less digits than its factorization.

9920541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306850.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 9920541 is about 3149.6890322697. The cubic root of 9920541 is about 214.8713201507.

The spelling of 9920541 in words is "nine million, nine hundred twenty thousand, five hundred forty-one".