3404043521 has 4 divisors (see below), whose sum is σ = 3428890692. Its totient is φ = 3379196352.

The previous prime is 3404043497. The next prime is 3404043523. The reversal of 3404043521 is 1253404043.

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 1623203521 + 1780840000 = 40289^2 + 42200^2 .

It is a cyclic number.

It is not a de Polignac number, because 3404043521 - 2⁶ = 3404043457 is a prime.

It is a super-3 number, since 3×3404043521³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3404043523) 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, 12423380 + ... + 12423653.

It is an arithmetic number, because the mean of its divisors is an integer number (857222673).

Almost surely, 2^3404043521 is an apocalyptic number.

It is an amenable number.

3404043521 is a deficient number, since it is larger than the sum of its proper divisors (24847171).

3404043521 is a wasteful number, since it uses less digits than its factorization.

3404043521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24847170.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 3404043521 is about 58344.1815522336. The cubic root of 3404043521 is about 1504.2904601192.

Adding to 3404043521 its reverse (1253404043), we get a palindrome (4657447564).

The spelling of 3404043521 in words is "three billion, four hundred four million, forty-three thousand, five hundred twenty-one".