3944536463 has 4 divisors (see below), whose sum is σ = 4508041680. Its totient is φ = 3381031248.

The previous prime is 3944536459. The next prime is 3944536483. The reversal of 3944536463 is 3646354493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3646354493 = 151 ⋅24148043.

It is not a de Polignac number, because 3944536463 - 2² = 3944536459 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 (3944536433) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 281752598 + ... + 281752611.

It is an arithmetic number, because the mean of its divisors is an integer number (1127010420).

Almost surely, 2^3944536463 is an apocalyptic number.

3944536463 is a deficient number, since it is larger than the sum of its proper divisors (563505217).

3944536463 is an equidigital number, since it uses as much as digits as its factorization.

3944536463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563505216.

The product of its digits is 2799360, while the sum is 47.

The square root of 3944536463 is about 62805.5448427923. The cubic root of 3944536463 is about 1580.0299709905.

The spelling of 3944536463 in words is "three billion, nine hundred forty-four million, five hundred thirty-six thousand, four hundred sixty-three".