916465889 has 4 divisors (see below), whose sum is σ = 956312256. Its totient is φ = 876619524.

The previous prime is 916465829. The next prime is 916465919. The reversal of 916465889 is 988564619.

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 an emirpimes, since its reverse is a distinct semiprime: 988564619 = 7 ⋅141223517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-916465889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916465829) 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, 19923149 + ... + 19923194.

It is an arithmetic number, because the mean of its divisors is an integer number (239078064).

Almost surely, 2^916465889 is an apocalyptic number.

It is an amenable number.

916465889 is a deficient number, since it is larger than the sum of its proper divisors (39846367).

916465889 is a wasteful number, since it uses less digits than its factorization.

916465889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39846366.

The product of its digits is 3732480, while the sum is 56.

The square root of 916465889 is about 30273.1876253559. The cubic root of 916465889 is about 971.3418524572.

The spelling of 916465889 in words is "nine hundred sixteen million, four hundred sixty-five thousand, eight hundred eighty-nine".