9620381 has 4 divisors (see below), whose sum is σ = 9627264. Its totient is φ = 9613500.

The previous prime is 9620341. The next prime is 9620389. The reversal of 9620381 is 1830269.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1830269 = 7 ⋅261467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9620381 is a prime.

It is a super-2 number, since 2×9620381² = 185103461170322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9620389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (2406816).

Almost surely, 2^9620381 is an apocalyptic number.

It is an amenable number.

9620381 is a deficient number, since it is larger than the sum of its proper divisors (6883).

9620381 is a wasteful number, since it uses less digits than its factorization.

9620381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 9620381 is about 3101.6739029111. The cubic root of 9620381 is about 212.6820106110.

It can be divided in two parts, 9620 and 381, that added together give a palindrome (10001).

The spelling of 9620381 in words is "nine million, six hundred twenty thousand, three hundred eighty-one".