916123389 has 8 divisors (see below), whose sum is σ = 1247487360. Its totient is φ = 597754176.

The previous prime is 916123357. The next prime is 916123433. The reversal of 916123389 is 983321619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 916123389 - 2⁵ = 916123357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 916123389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916123289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3248524 + ... + 3248805.

It is an arithmetic number, because the mean of its divisors is an integer number (155935920).

Almost surely, 2^916123389 is an apocalyptic number.

It is an amenable number.

916123389 is a deficient number, since it is larger than the sum of its proper divisors (331363971).

916123389 is a wasteful number, since it uses less digits than its factorization.

916123389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6497379.

The product of its digits is 69984, while the sum is 42.

The square root of 916123389 is about 30267.5302758583. The cubic root of 916123389 is about 971.2208346647.

The spelling of 916123389 in words is "nine hundred sixteen million, one hundred twenty-three thousand, three hundred eighty-nine".