850720395 has 32 divisors (see below), whose sum is σ = 1556877312. Its totient is φ = 388582272.

The previous prime is 850720393. The next prime is 850720397. The reversal of 850720395 is 593027058.

It is an interprime number because it is at equal distance from previous prime (850720393) and next prime (850720397).

It is not a de Polignac number, because 850720395 - 2¹ = 850720393 is a prime.

It is a super-3 number, since 3×850720395³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (850720393) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 166854 + ... + 171876.

It is an arithmetic number, because the mean of its divisors is an integer number (48652416).

Almost surely, 2^850720395 is an apocalyptic number.

850720395 is a deficient number, since it is larger than the sum of its proper divisors (706156917).

850720395 is a wasteful number, since it uses less digits than its factorization.

850720395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 850720395 is about 29167.1115299407. Note that the first 3 decimals coincide. The cubic root of 850720395 is about 947.5357723259.

The spelling of 850720395 in words is "eight hundred fifty million, seven hundred twenty thousand, three hundred ninety-five".