905470840 has 32 divisors (see below), whose sum is σ = 2144538000. Its totient is φ = 343125504.

The previous prime is 905470801. The next prime is 905470871. The reversal of 905470840 is 48074509.

It is a self number, because there is not a number n which added to its sum of digits gives 905470840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594945 + ... + 596464.

Almost surely, 2^905470840 is an apocalyptic number.

It is an amenable number.

905470840 is an abundant number, since it is smaller than the sum of its proper divisors (1239067160).

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

905470840 is a wasteful number, since it uses less digits than its factorization.

905470840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191439 (or 1191435 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 905470840 is about 30091.0425209895. The cubic root of 905470840 is about 967.4417443396.

The spelling of 905470840 in words is "nine hundred five million, four hundred seventy thousand, eight hundred forty".