3945740929 has 8 divisors (see below), whose sum is σ = 4266894632. Its totient is φ = 3627106560.

The previous prime is 3945740917. The next prime is 3945740947. The reversal of 3945740929 is 9290475493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1644140304 + 2301600625 = 40548^2 + 47975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3945740929 - 2⁹ = 3945740417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3945740959) 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 7 ways as a sum of consecutive naturals, for example, 626574 + ... + 632839.

It is an arithmetic number, because the mean of its divisors is an integer number (533361829).

Almost surely, 2^3945740929 is an apocalyptic number.

It is an amenable number.

3945740929 is a deficient number, since it is larger than the sum of its proper divisors (321153703).

3945740929 is a wasteful number, since it uses less digits than its factorization.

3945740929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259667.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 3945740929 is about 62815.1329617314. The cubic root of 3945740929 is about 1580.1907755807.

The spelling of 3945740929 in words is "three billion, nine hundred forty-five million, seven hundred forty thousand, nine hundred twenty-nine".