850965408 has 72 divisors (see below), whose sum is σ = 2525167008. Its totient is φ = 271320192.

The previous prime is 850965397. The next prime is 850965419. The reversal of 850965408 is 804569058.

It is an interprime number because it is at equal distance from previous prime (850965397) and next prime (850965419).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×850965408² = 1448284251225212928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57610 + ... + 70857.

It is an arithmetic number, because the mean of its divisors is an integer number (35071764).

Almost surely, 2^850965408 is an apocalyptic number.

It is an amenable number.

850965408 is an abundant number, since it is smaller than the sum of its proper divisors (1674201600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

850965408 is a wasteful number, since it uses less digits than its factorization.

850965408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128506 (or 128495 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 850965408 is about 29171.3113863604. The cubic root of 850965408 is about 947.6267290803.

The spelling of 850965408 in words is "eight hundred fifty million, nine hundred sixty-five thousand, four hundred eight".