816709950 has 108 divisors (see below), whose sum is σ = 2552537520. Its totient is φ = 186671520.

The previous prime is 816709939. The next prime is 816709963. The reversal of 816709950 is 59907618.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 816709896 and 816709905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3531 + ... + 40569.

Almost surely, 2^816709950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 816709950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276268760).

816709950 is an abundant number, since it is smaller than the sum of its proper divisors (1735827570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816709950 is a wasteful number, since it uses less digits than its factorization.

816709950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37071 (or 37056 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 816709950 is about 28578.1376230153. The cubic root of 816709950 is about 934.7366736318.

The spelling of 816709950 in words is "eight hundred sixteen million, seven hundred nine thousand, nine hundred fifty".