3997805930 has 8 divisors (see below), whose sum is σ = 7196050692. Its totient is φ = 1599122368.

The previous prime is 3997805921. The next prime is 3997805939. The reversal of 3997805930 is 395087993.

It is an interprime number because it is at equal distance from previous prime (3997805921) and next prime (3997805939).

It can be written as a sum of positive squares in 2 ways, for example, as 3836439721 + 161366209 = 61939^2 + 12703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3997805939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199890287 + ... + 199890306.

Almost surely, 2^3997805930 is an apocalyptic number.

3997805930 is a deficient number, since it is larger than the sum of its proper divisors (3198244762).

3997805930 is a wasteful number, since it uses less digits than its factorization.

3997805930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399780600.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 3997805930 is about 63228.2051777528. The cubic root of 3997805930 is about 1587.1107597994.

The spelling of 3997805930 in words is "three billion, nine hundred ninety-seven million, eight hundred five thousand, nine hundred thirty".