3629985947 has 4 divisors (see below), whose sum is σ = 4148555376. Its totient is φ = 3111416520.

The previous prime is 3629985937. The next prime is 3629985949. The reversal of 3629985947 is 7495899263.

It is a happy number.

3629985947 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3629985947 - 2⁸ = 3629985691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3629985947.

It is not an unprimeable number, because it can be changed into a prime (3629985949) 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, 259284704 + ... + 259284717.

It is an arithmetic number, because the mean of its divisors is an integer number (1037138844).

Almost surely, 2^3629985947 is an apocalyptic number.

3629985947 is a deficient number, since it is larger than the sum of its proper divisors (518569429).

3629985947 is an equidigital number, since it uses as much as digits as its factorization.

3629985947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518569428.

The product of its digits is 29393280, while the sum is 62.

The square root of 3629985947 is about 60249.3647020448. The cubic root of 3629985947 is about 1536.8623848461.

The spelling of 3629985947 in words is "three billion, six hundred twenty-nine million, nine hundred eighty-five thousand, nine hundred forty-seven".