3964645273 has 4 divisors (see below), whose sum is σ = 4092537088. Its totient is φ = 3836753460.

The previous prime is 3964645271. The next prime is 3964645357. The reversal of 3964645273 is 3725464693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3725464693 = 373 ⋅9987841.

It is a cyclic number.

It is not a de Polignac number, because 3964645273 - 2¹ = 3964645271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3964645271) 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, 63945861 + ... + 63945922.

It is an arithmetic number, because the mean of its divisors is an integer number (1023134272).

Almost surely, 2^3964645273 is an apocalyptic number.

It is an amenable number.

3964645273 is a deficient number, since it is larger than the sum of its proper divisors (127891815).

3964645273 is a wasteful number, since it uses less digits than its factorization.

3964645273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127891814.

The product of its digits is 3265920, while the sum is 49.

The square root of 3964645273 is about 62965.4291893576. The cubic root of 3964645273 is about 1582.7103606247.

The spelling of 3964645273 in words is "three billion, nine hundred sixty-four million, six hundred forty-five thousand, two hundred seventy-three".