3966921273 has 24 divisors (see below), whose sum is σ = 6167084448. Its totient is φ = 2261540736.

The previous prime is 3966921221. The next prime is 3966921311. The reversal of 3966921273 is 3721296693.

It is a happy number.

It is not a de Polignac number, because 3966921273 - 2⁹ = 3966920761 is a prime.

It is the 62984-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (3962921273) by changing a digit.

It is a nontrivial repunit in base 62983.

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 23 ways as a sum of consecutive naturals, for example, 32490 + ... + 94812.

It is an arithmetic number, because the mean of its divisors is an integer number (256961852).

Almost surely, 2^3966921273 is an apocalyptic number.

It is an amenable number.

3966921273 is a deficient number, since it is larger than the sum of its proper divisors (2200163175).

3966921273 is a wasteful number, since it uses less digits than its factorization.

3966921273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62773 (or 62766 counting only the distinct ones).

The product of its digits is 734832, while the sum is 48.

The square root of 3966921273 is about 62983.5000059539. The cubic root of 3966921273 is about 1583.0131670074.

The spelling of 3966921273 in words is "three billion, nine hundred sixty-six million, nine hundred twenty-one thousand, two hundred seventy-three".