999349488 has 200 divisors, whose sum is σ = 3112849872. Its totient is φ = 308385792.

The previous prime is 999349469. The next prime is 999349489. The reversal of 999349488 is 884943999.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999349489) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1475806 + ... + 1476482.

Almost surely, 2^999349488 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 999349488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556424936).

999349488 is an abundant number, since it is smaller than the sum of its proper divisors (2113500384).

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

999349488 is a wasteful number, since it uses less digits than its factorization.

999349488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 766 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 999349488 is about 31612.4894306032. The cubic root of 999349488 is about 999.7831156312.

The spelling of 999349488 in words is "nine hundred ninety-nine million, three hundred forty-nine thousand, four hundred eighty-eight".