840908804 has 6 divisors (see below), whose sum is σ = 1471590414. Its totient is φ = 420454400.

The previous prime is 840908779. The next prime is 840908807. The reversal of 840908804 is 408809048.

It can be written as a sum of positive squares in only one way, i.e., 821968900 + 18939904 = 28670^2 + 4352^2 .

It is not an unprimeable number, because it can be changed into a prime (840908807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105113597 + ... + 105113604.

It is an arithmetic number, because the mean of its divisors is an integer number (245265069).

Almost surely, 2^840908804 is an apocalyptic number.

It is an amenable number.

840908804 is a deficient number, since it is larger than the sum of its proper divisors (630681610).

840908804 is a wasteful number, since it uses less digits than its factorization.

840908804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210227205 (or 210227203 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 840908804 is about 28998.4276125448. The cubic root of 840908804 is about 943.8789479581.

The spelling of 840908804 in words is "eight hundred forty million, nine hundred eight thousand, eight hundred four".