838990850 has 24 divisors (see below), whose sum is σ = 1565876340. Its totient is φ = 334445120.

The previous prime is 838990811. The next prime is 838990853. The reversal of 838990850 is 58099838.

It can be written as a sum of positive squares in 6 ways, for example, as 732839041 + 106151809 = 27071^2 + 10303^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (838990853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13985 + ... + 43284.

Almost surely, 2^838990850 is an apocalyptic number.

838990850 is a deficient number, since it is larger than the sum of its proper divisors (726885490).

838990850 is a wasteful number, since it uses less digits than its factorization.

838990850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57574 (or 57569 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 838990850 is about 28965.3387689493. The cubic root of 838990850 is about 943.1607985498.

The spelling of 838990850 in words is "eight hundred thirty-eight million, nine hundred ninety thousand, eight hundred fifty".