3957045209 has 8 divisors (see below), whose sum is σ = 4265975112. Its totient is φ = 3648764160.

The previous prime is 3957045199. The next prime is 3957045229. The reversal of 3957045209 is 9025407593.

It can be written as a sum of positive squares in 4 ways, for example, as 621405184 + 3335640025 = 24928^2 + 57755^2 .

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 3957045209 - 2¹² = 3957041113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3957045209.

It is not an unprimeable number, because it can be changed into a prime (3957045229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149504 + ... + 173969.

It is an arithmetic number, because the mean of its divisors is an integer number (533246889).

Almost surely, 2^3957045209 is an apocalyptic number.

It is an amenable number.

3957045209 is a deficient number, since it is larger than the sum of its proper divisors (308929903).

3957045209 is a wasteful number, since it uses less digits than its factorization.

3957045209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324427.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 3957045209 is about 62905.0491534662. The cubic root of 3957045209 is about 1581.6983832111.

The spelling of 3957045209 in words is "three billion, nine hundred fifty-seven million, forty-five thousand, two hundred nine".