3909397834 has 8 divisors (see below), whose sum is σ = 5865868260. Its totient is φ = 1954108416.

The previous prime is 3909397831. The next prime is 3909397841. The reversal of 3909397834 is 4387939093.

It can be written as a sum of positive squares in 2 ways, for example, as 3821094225 + 88303609 = 61815^2 + 9397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3909397831) 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, 286929 + ... + 300244.

Almost surely, 2^3909397834 is an apocalyptic number.

3909397834 is a deficient number, since it is larger than the sum of its proper divisors (1956470426).

3909397834 is a wasteful number, since it uses less digits than its factorization.

3909397834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590504.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The square root of 3909397834 is about 62525.1776007074. The cubic root of 3909397834 is about 1575.3242411644.

The spelling of 3909397834 in words is "three billion, nine hundred nine million, three hundred ninety-seven thousand, eight hundred thirty-four".