3966791955 has 16 divisors (see below), whose sum is σ = 7253562624. Its totient is φ = 1813390560.

The previous prime is 3966791953. The next prime is 3966791957. The reversal of 3966791955 is 5591976693.

It is an interprime number because it is at equal distance from previous prime (3966791953) and next prime (3966791957).

It is not a de Polignac number, because 3966791955 - 2¹ = 3966791953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3966791953) 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, 18889381 + ... + 18889590.

It is an arithmetic number, because the mean of its divisors is an integer number (453347664).

Almost surely, 2^3966791955 is an apocalyptic number.

3966791955 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3966791955 is a deficient number, since it is larger than the sum of its proper divisors (3286770669).

3966791955 is a wasteful number, since it uses less digits than its factorization.

3966791955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37778986.

The product of its digits is 13778100, while the sum is 60.

The square root of 3966791955 is about 62982.4733953820. The cubic root of 3966791955 is about 1582.9959652273.

The spelling of 3966791955 in words is "three billion, nine hundred sixty-six million, seven hundred ninety-one thousand, nine hundred fifty-five".