909385940 has 12 divisors (see below), whose sum is σ = 1909710516. Its totient is φ = 363754368.

The previous prime is 909385927. The next prime is 909385943. The reversal of 909385940 is 49583909.

It can be written as a sum of positive squares in 2 ways, for example, as 242300356 + 667085584 = 15566^2 + 25828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909385943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22734629 + ... + 22734668.

It is an arithmetic number, because the mean of its divisors is an integer number (159142543).

Almost surely, 2^909385940 is an apocalyptic number.

It is an amenable number.

909385940 is an abundant number, since it is smaller than the sum of its proper divisors (1000324576).

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

909385940 is a wasteful number, since it uses less digits than its factorization.

909385940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45469306 (or 45469304 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 909385940 is about 30156.0265950274. The cubic root of 909385940 is about 968.8340900159.

The spelling of 909385940 in words is "nine hundred nine million, three hundred eighty-five thousand, nine hundred forty".