9019913 has 4 divisors (see below), whose sum is σ = 10308480. Its totient is φ = 7731348.

The previous prime is 9019909. The next prime is 9019937. The reversal of 9019913 is 3199109.

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: 3199109 = 883 ⋅3623.

It is a cyclic number.

It is not a de Polignac number, because 9019913 - 2² = 9019909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9019913.

It is not an unprimeable number, because it can be changed into a prime (9019963) 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, 644273 + ... + 644286.

It is an arithmetic number, because the mean of its divisors is an integer number (2577120).

Almost surely, 2^9019913 is an apocalyptic number.

It is an amenable number.

9019913 is a deficient number, since it is larger than the sum of its proper divisors (1288567).

9019913 is a wasteful number, since it uses less digits than its factorization.

9019913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288566.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 9019913 is about 3003.3169995856. The cubic root of 9019913 is about 208.1616793353.

The spelling of 9019913 in words is "nine million, nineteen thousand, nine hundred thirteen".