3949660733 has 4 divisors (see below), whose sum is σ = 3950353500. Its totient is φ = 3948967968.

The previous prime is 3949660727. The next prime is 3949660747. The reversal of 3949660733 is 3370669493.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 975812644 + 2973848089 = 31238^2 + 54533^2 .

It is a cyclic number.

It is not a de Polignac number, because 3949660733 - 2⁶ = 3949660669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949660723) 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, 337760 + ... + 349257.

It is an arithmetic number, because the mean of its divisors is an integer number (987588375).

Almost surely, 2^3949660733 is an apocalyptic number.

It is an amenable number.

3949660733 is a deficient number, since it is larger than the sum of its proper divisors (692767).

3949660733 is an equidigital number, since it uses as much as digits as its factorization.

3949660733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692766.

The product of its (nonzero) digits is 2204496, while the sum is 50.

The square root of 3949660733 is about 62846.3263285930. The cubic root of 3949660733 is about 1580.7138702507.

The spelling of 3949660733 in words is "three billion, nine hundred forty-nine million, six hundred sixty thousand, seven hundred thirty-three".