9019901 has 4 divisors (see below), whose sum is σ = 9839904. Its totient is φ = 8199900.

The previous prime is 9019891. The next prime is 9019909. The reversal of 9019901 is 1099109.

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 a cyclic number.

It is not a de Polignac number, because 9019901 - 2¹⁴ = 9003517 is a prime.

It is a super-2 number, since 2×9019901² = 162717228099602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9019909) 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, 409985 + ... + 410006.

It is an arithmetic number, because the mean of its divisors is an integer number (2459976).

Almost surely, 2^9019901 is an apocalyptic number.

It is an amenable number.

9019901 is a deficient number, since it is larger than the sum of its proper divisors (820003).

9019901 is a wasteful number, since it uses less digits than its factorization.

9019901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820002.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 9019901 is about 3003.3150017939. The cubic root of 9019901 is about 208.1615870232.

It can be divided in two parts, 90 and 19901, that added together give a palindrome (19991).

The spelling of 9019901 in words is "nine million, nineteen thousand, nine hundred one".