3999051000 has 384 divisors, whose sum is σ = 16026716160. Its totient is φ = 913680000.

The previous prime is 3999050999. The next prime is 3999051053. The reversal of 3999051000 is 1509993.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1699825 + ... + 1702175.

It is an arithmetic number, because the mean of its divisors is an integer number (41736240).

Almost surely, 2^3999051000 is an apocalyptic number.

3999051000 is a gapful number since it is divisible by the number (30) 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 3999051000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8013358080).

3999051000 is an abundant number, since it is smaller than the sum of its proper divisors (12027665160).

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

3999051000 is a wasteful number, since it uses less digits than its factorization.

3999051000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 3999051000 is about 63238.0502545738. The cubic root of 3999051000 is about 1587.2755050725.

The spelling of 3999051000 in words is "three billion, nine hundred ninety-nine million, fifty-one thousand".