913228689 has 4 divisors (see below), whose sum is σ = 1217638256. Its totient is φ = 608819124.

The previous prime is 913228681. The next prime is 913228717. The reversal of 913228689 is 986822319.

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 not a de Polignac number, because 913228689 - 2³ = 913228681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913228681) 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, 152204779 + ... + 152204784.

It is an arithmetic number, because the mean of its divisors is an integer number (304409564).

Almost surely, 2^913228689 is an apocalyptic number.

It is an amenable number.

913228689 is a deficient number, since it is larger than the sum of its proper divisors (304409567).

913228689 is a wasteful number, since it uses less digits than its factorization.

913228689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304409566.

The product of its digits is 373248, while the sum is 48.

The square root of 913228689 is about 30219.6738731575. The cubic root of 913228689 is about 970.1968244090.

The spelling of 913228689 in words is "nine hundred thirteen million, two hundred twenty-eight thousand, six hundred eighty-nine".