913521229 has 4 divisors (see below), whose sum is σ = 918991584. Its totient is φ = 908050876.

The previous prime is 913521227. The next prime is 913521251. The reversal of 913521229 is 922125319.

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: 922125319 = 103 ⋅8952673.

It is a cyclic number.

It is not a de Polignac number, because 913521229 - 2¹ = 913521227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 913521194 and 913521203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913521221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734927 + ... + 2735260.

It is an arithmetic number, because the mean of its divisors is an integer number (229747896).

Almost surely, 2^913521229 is an apocalyptic number.

It is an amenable number.

913521229 is a deficient number, since it is larger than the sum of its proper divisors (5470355).

913521229 is a wasteful number, since it uses less digits than its factorization.

913521229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470354.

The product of its digits is 9720, while the sum is 34.

The square root of 913521229 is about 30224.5137099011. The cubic root of 913521229 is about 970.3004096635.

The spelling of 913521229 in words is "nine hundred thirteen million, five hundred twenty-one thousand, two hundred twenty-nine".