3999764340 has 192 divisors, whose sum is σ = 14619467520. Its totient is φ = 895034880.

The previous prime is 3999764333. The next prime is 3999764357. The reversal of 3999764340 is 434679993.

It is a super-2 number, since 2×3999764340² = 31996229551071271200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51322 + ... + 103118.

It is an arithmetic number, because the mean of its divisors is an integer number (76143060).

Almost surely, 2^3999764340 is an apocalyptic number.

3999764340 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 3999764340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7309733760).

3999764340 is an abundant number, since it is smaller than the sum of its proper divisors (10619703180).

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

3999764340 is a wasteful number, since it uses less digits than its factorization.

3999764340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51839 (or 51831 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 54.

The square root of 3999764340 is about 63243.6901200428. The cubic root of 3999764340 is about 1587.3698774450.

The spelling of 3999764340 in words is "three billion, nine hundred ninety-nine million, seven hundred sixty-four thousand, three hundred forty".