3505406394 has 48 divisors (see below), whose sum is σ = 8236251936. Its totient is φ = 991620000.

The previous prime is 3505406393. The next prime is 3505406417. The reversal of 3505406394 is 4936045053.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3505406393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29332 + ... + 88719.

It is an arithmetic number, because the mean of its divisors is an integer number (171588582).

Almost surely, 2^3505406394 is an apocalyptic number.

3505406394 is an abundant number, since it is smaller than the sum of its proper divisors (4730845542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3505406394 is a wasteful number, since it uses less digits than its factorization.

3505406394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118171 (or 118164 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 3505406394 is about 59206.4725684616. The cubic root of 3505406394 is about 1519.0758454912.

The spelling of 3505406394 in words is "three billion, five hundred five million, four hundred six thousand, three hundred ninety-four".