3909468929 has 4 divisors (see below), whose sum is σ = 3909618180. Its totient is φ = 3909319680.

The previous prime is 3909468919. The next prime is 3909468947. The reversal of 3909468929 is 9298649093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9298649093 = 23 ⋅404289091.

It can be written as a sum of positive squares in 2 ways, for example, as 3622234225 + 287234704 = 60185^2 + 16948^2 .

It is a cyclic number.

It is not a de Polignac number, because 3909468929 - 2²⁴ = 3892691713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3909468919) 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, 23792 + ... + 91569.

It is an arithmetic number, because the mean of its divisors is an integer number (977404545).

Almost surely, 2^3909468929 is an apocalyptic number.

It is an amenable number.

3909468929 is a deficient number, since it is larger than the sum of its proper divisors (149251).

3909468929 is a wasteful number, since it uses less digits than its factorization.

3909468929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149250.

The product of its (nonzero) digits is 7558272, while the sum is 59.

The square root of 3909468929 is about 62525.7461290947. The cubic root of 3909468929 is about 1575.3337905463. Note that the first 3 decimals are identical.

The spelling of 3909468929 in words is "three billion, nine hundred nine million, four hundred sixty-eight thousand, nine hundred twenty-nine".