850121790 has 32 divisors (see below), whose sum is σ = 2331763200. Its totient is φ = 194313504.

The previous prime is 850121777. The next prime is 850121801. The reversal of 850121790 is 97121058.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2023890 + ... + 2024309.

It is an arithmetic number, because the mean of its divisors is an integer number (72867600).

Almost surely, 2^850121790 is an apocalyptic number.

850121790 is an abundant number, since it is smaller than the sum of its proper divisors (1481641410).

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

850121790 is a wasteful number, since it uses less digits than its factorization.

850121790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048216.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 850121790 is about 29156.8480806825. The cubic root of 850121790 is about 947.3134772992.

The spelling of 850121790 in words is "eight hundred fifty million, one hundred twenty-one thousand, seven hundred ninety".