909471438 has 12 divisors (see below), whose sum is σ = 1970521488. Its totient is φ = 303157140.

The previous prime is 909471427. The next prime is 909471473. The reversal of 909471438 is 834174909.

It is a junction number, because it is equal to n+sod(n) for n = 909471393 and 909471402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25263078 + ... + 25263113.

It is an arithmetic number, because the mean of its divisors is an integer number (164210124).

Almost surely, 2^909471438 is an apocalyptic number.

909471438 is an abundant number, since it is smaller than the sum of its proper divisors (1061050050).

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

909471438 is a wasteful number, since it uses less digits than its factorization.

909471438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50526199 (or 50526196 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 909471438 is about 30157.4441556310. Note that the first 3 decimals coincide. The cubic root of 909471438 is about 968.8644514490.

It can be divided in two parts, 909471 and 438, that added together give a palindrome (909909).

The spelling of 909471438 in words is "nine hundred nine million, four hundred seventy-one thousand, four hundred thirty-eight".