850166405 has 8 divisors (see below), whose sum is σ = 1112945184. Its totient is φ = 618302800.

The previous prime is 850166399. The next prime is 850166423. The reversal of 850166405 is 504661058.

It is a happy number.

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

It is not a de Polignac number, because 850166405 - 2¹⁸ = 849904261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7728731 + ... + 7728840.

It is an arithmetic number, because the mean of its divisors is an integer number (139118148).

Almost surely, 2^850166405 is an apocalyptic number.

It is an amenable number.

850166405 is a deficient number, since it is larger than the sum of its proper divisors (262778779).

850166405 is a wasteful number, since it uses less digits than its factorization.

850166405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15457587.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 850166405 is about 29157.6131567726. The cubic root of 850166405 is about 947.3300489058.

The spelling of 850166405 in words is "eight hundred fifty million, one hundred sixty-six thousand, four hundred five".