3505898405 has 4 divisors (see below), whose sum is σ = 4207078092. Its totient is φ = 2804718720.

The previous prime is 3505898381. The next prime is 3505898443. The reversal of 3505898405 is 5048985053.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1367668324 + 2138230081 = 36982^2 + 46241^2 .

It is not a de Polignac number, because 3505898405 - 2³⁰ = 2432156581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3505898405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350589836 + ... + 350589845.

It is an arithmetic number, because the mean of its divisors is an integer number (1051769523).

Almost surely, 2^3505898405 is an apocalyptic number.

It is an amenable number.

3505898405 is a deficient number, since it is larger than the sum of its proper divisors (701179687).

3505898405 is an equidigital number, since it uses as much as digits as its factorization.

3505898405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701179686.

The product of its (nonzero) digits is 864000, while the sum is 47.

The square root of 3505898405 is about 59210.6274666972. The cubic root of 3505898405 is about 1519.1469135288.

The spelling of 3505898405 in words is "three billion, five hundred five million, eight hundred ninety-eight thousand, four hundred five".