913617389 has 4 divisors (see below), whose sum is σ = 913688256. Its totient is φ = 913546524.

The previous prime is 913617379. The next prime is 913617401. The reversal of 913617389 is 983716319.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 913617389 - 2⁴ = 913617373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913617379) 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, 10019 + ... + 43904.

It is an arithmetic number, because the mean of its divisors is an integer number (228422064).

Almost surely, 2^913617389 is an apocalyptic number.

It is an amenable number.

913617389 is a deficient number, since it is larger than the sum of its proper divisors (70867).

913617389 is a wasteful number, since it uses less digits than its factorization.

913617389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70866.

The product of its digits is 244944, while the sum is 47.

The square root of 913617389 is about 30226.1044297806. The cubic root of 913617389 is about 970.3344540516.

The spelling of 913617389 in words is "nine hundred thirteen million, six hundred seventeen thousand, three hundred eighty-nine".