609969450 has 48 divisors (see below), whose sum is σ = 1526643360. Its totient is φ = 161161920.

The previous prime is 609969403. The next prime is 609969461. The reversal of 609969450 is 54969906.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 609969450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2304 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (31805070).

Almost surely, 2^609969450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609969450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763321680).

609969450 is an abundant number, since it is smaller than the sum of its proper divisors (916673910).

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

609969450 is a wasteful number, since it uses less digits than its factorization.

609969450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37431 (or 37426 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 609969450 is about 24697.5595960411. The cubic root of 609969450 is about 848.0784505637.

The spelling of 609969450 in words is "six hundred nine million, nine hundred sixty-nine thousand, four hundred fifty".