850415906 has 4 divisors (see below), whose sum is σ = 1275623862. Its totient is φ = 425207952.

The previous prime is 850415879. The next prime is 850415957. The reversal of 850415906 is 609514058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609514058 = 2 ⋅304757029.

It can be written as a sum of positive squares in only one way, i.e., 456036025 + 394379881 = 21355^2 + 19859^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 850415906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212603975 + ... + 212603978.

Almost surely, 2^850415906 is an apocalyptic number.

850415906 is a deficient number, since it is larger than the sum of its proper divisors (425207956).

850415906 is a wasteful number, since it uses less digits than its factorization.

850415906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425207955.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 850415906 is about 29161.8913309819. The cubic root of 850415906 is about 947.4227118147.

The spelling of 850415906 in words is "eight hundred fifty million, four hundred fifteen thousand, nine hundred six".