900549440 has 168 divisors, whose sum is σ = 2529596160. Its totient is φ = 304432128.

The previous prime is 900549439. The next prime is 900549443. The reversal of 900549440 is 44945009.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 900549440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900549443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1238357 + ... + 1239083.

It is an arithmetic number, because the mean of its divisors is an integer number (15057120).

Almost surely, 2^900549440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 900549440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264798080).

900549440 is an abundant number, since it is smaller than the sum of its proper divisors (1629046720).

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

900549440 is a wasteful number, since it uses less digits than its factorization.

900549440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 900549440 is about 30009.1559361472. The cubic root of 900549440 is about 965.6858181514.

The spelling of 900549440 in words is "nine hundred million, five hundred forty-nine thousand, four hundred forty".