850474990 has 8 divisors (see below), whose sum is σ = 1530855000. Its totient is φ = 340189992.

The previous prime is 850474981. The next prime is 850475023. The reversal of 850474990 is 99474058.

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

It is a self number, because there is not a number n which added to its sum of digits gives 850474990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42523740 + ... + 42523759.

It is an arithmetic number, because the mean of its divisors is an integer number (191356875).

Almost surely, 2^850474990 is an apocalyptic number.

850474990 is a deficient number, since it is larger than the sum of its proper divisors (680380010).

850474990 is a wasteful number, since it uses less digits than its factorization.

850474990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85047506.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 850474990 is about 29162.9043478183. The cubic root of 850474990 is about 947.4446525408. Note that the first 3 decimals are identical.

The spelling of 850474990 in words is "eight hundred fifty million, four hundred seventy-four thousand, nine hundred ninety".