850401445 has 4 divisors (see below), whose sum is σ = 1020481740. Its totient is φ = 680321152.

The previous prime is 850401443. The next prime is 850401457. The reversal of 850401445 is 544104058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544104058 = 2 ⋅272052029.

It can be written as a sum of positive squares in 2 ways, for example, as 617472801 + 232928644 = 24849^2 + 15262^2 .

It is a cyclic number.

It is not a de Polignac number, because 850401445 - 2¹ = 850401443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850401443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85040140 + ... + 85040149.

It is an arithmetic number, because the mean of its divisors is an integer number (255120435).

Almost surely, 2^850401445 is an apocalyptic number.

It is an amenable number.

850401445 is a deficient number, since it is larger than the sum of its proper divisors (170080295).

850401445 is a wasteful number, since it uses less digits than its factorization.

850401445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170080294.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 850401445 is about 29161.6433864760. The cubic root of 850401445 is about 947.4173415963.

The spelling of 850401445 in words is "eight hundred fifty million, four hundred one thousand, four hundred forty-five".