3997865055 has 16 divisors (see below), whose sum is σ = 6398004960. Its totient is φ = 2131721088.

The previous prime is 3997865021. The next prime is 3997865057. The reversal of 3997865055 is 5505687993.

3997865055 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3997865055 - 2¹⁸ = 3997602911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3997864986 and 3997865004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997865057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46489 + ... + 100781.

It is an arithmetic number, because the mean of its divisors is an integer number (399875310).

Almost surely, 2^3997865055 is an apocalyptic number.

3997865055 is a deficient number, since it is larger than the sum of its proper divisors (2400139905).

3997865055 is a wasteful number, since it uses less digits than its factorization.

3997865055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59210.

The product of its (nonzero) digits is 10206000, while the sum is 57.

The square root of 3997865055 is about 63228.6727284386. The cubic root of 3997865055 is about 1587.1185838795.

The spelling of 3997865055 in words is "three billion, nine hundred ninety-seven million, eight hundred sixty-five thousand, fifty-five".