1009323900 has 216 divisors, whose sum is σ = 3430290864. Its totient is φ = 246758400.

The previous prime is 1009323893. The next prime is 1009323923. The reversal of 1009323900 is 93239001.

It is a super-2 number, since 2×1009323900² = 2037469470222420000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3287547 + ... + 3287853.

Almost surely, 2^1009323900 is an apocalyptic number.

1009323900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009323900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1715145432).

1009323900 is an abundant number, since it is smaller than the sum of its proper divisors (2420966964).

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

1009323900 is a wasteful number, since it uses less digits than its factorization.

1009323900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 1009323900 is about 31769.8583566248. The cubic root of 1009323900 is about 1003.0983569364.

The spelling of 1009323900 in words is "one billion, nine million, three hundred twenty-three thousand, nine hundred".