4397955991 has 16 divisors (see below), whose sum is σ = 5232245760. Its totient is φ = 3643866720.

The previous prime is 4397955977. The next prime is 4397956001. The reversal of 4397955991 is 1995597934.

It is not a de Polignac number, because 4397955991 - 2⁵ = 4397955959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4397955091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183355 + ... + 205948.

It is an arithmetic number, because the mean of its divisors is an integer number (327015360).

Almost surely, 2^4397955991 is an apocalyptic number.

4397955991 is a deficient number, since it is larger than the sum of its proper divisors (834289769).

4397955991 is a wasteful number, since it uses less digits than its factorization.

4397955991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389406.

The product of its digits is 13778100, while the sum is 61.

The square root of 4397955991 is about 66317.0867197889. The cubic root of 4397955991 is about 1638.3887594674.

The spelling of 4397955991 in words is "four billion, three hundred ninety-seven million, nine hundred fifty-five thousand, nine hundred ninety-one".