3940374369 has 4 divisors (see below), whose sum is σ = 5253832496. Its totient is φ = 2626916244.

The previous prime is 3940374353. The next prime is 3940374377. The reversal of 3940374369 is 9634730493.

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: 9634730493 = 3 ⋅3211576831.

It is not a de Polignac number, because 3940374369 - 2⁴ = 3940374353 is a prime.

It is a super-2 number, since 2×3940374369² = 31053100335744296322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3940374349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656729059 + ... + 656729064.

It is an arithmetic number, because the mean of its divisors is an integer number (1313458124).

Almost surely, 2^3940374369 is an apocalyptic number.

It is an amenable number.

3940374369 is a deficient number, since it is larger than the sum of its proper divisors (1313458127).

3940374369 is a wasteful number, since it uses less digits than its factorization.

3940374369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313458126.

The product of its (nonzero) digits is 1469664, while the sum is 48.

The square root of 3940374369 is about 62772.4013321141. The cubic root of 3940374369 is about 1579.4740503595.

The spelling of 3940374369 in words is "three billion, nine hundred forty million, three hundred seventy-four thousand, three hundred sixty-nine".