3996404730 has 48 divisors (see below), whose sum is σ = 10775497824. Its totient is φ = 1065707280.

The previous prime is 3996404723. The next prime is 3996404747. The reversal of 3996404730 is 374046993.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 819876 + ... + 824735.

It is an arithmetic number, because the mean of its divisors is an integer number (224489538).

Almost surely, 2^3996404730 is an apocalyptic number.

3996404730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3996404730 is an abundant number, since it is smaller than the sum of its proper divisors (6779093094).

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

3996404730 is a wasteful number, since it uses less digits than its factorization.

3996404730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644633 (or 1644621 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 3996404730 is about 63217.1237086915. The cubic root of 3996404730 is about 1586.9253147911.

The spelling of 3996404730 in words is "three billion, nine hundred ninety-six million, four hundred four thousand, seven hundred thirty".