850172434 has 8 divisors (see below), whose sum is σ = 1275389388. Its totient is φ = 425042640.

The previous prime is 850172413. The next prime is 850172441. The reversal of 850172434 is 434271058.

It can be written as a sum of positive squares in 2 ways, for example, as 733597225 + 116575209 = 27085^2 + 10797^2 .

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 850172434.

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 3 ways as a sum of consecutive naturals, for example, 15064 + ... + 43900.

Almost surely, 2^850172434 is an apocalyptic number.

850172434 is a deficient number, since it is larger than the sum of its proper divisors (425216954).

850172434 is a wasteful number, since it uses less digits than its factorization.

850172434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43580.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 850172434 is about 29157.7165429668. The cubic root of 850172434 is about 947.3322882475.

The spelling of 850172434 in words is "eight hundred fifty million, one hundred seventy-two thousand, four hundred thirty-four".