3401760821 has 4 divisors (see below), whose sum is σ = 3402300972. Its totient is φ = 3401220672.

The previous prime is 3401760811. The next prime is 3401760839. The reversal of 3401760821 is 1280671043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1280671043 = 4519 ⋅283397.

It can be written as a sum of positive squares in 2 ways, for example, as 1450771921 + 1950988900 = 38089^2 + 44170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3401760821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3401760811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260516 + ... + 273261.

It is an arithmetic number, because the mean of its divisors is an integer number (850575243).

Almost surely, 2^3401760821 is an apocalyptic number.

It is an amenable number.

3401760821 is a deficient number, since it is larger than the sum of its proper divisors (540151).

3401760821 is an equidigital number, since it uses as much as digits as its factorization.

3401760821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540150.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 3401760821 is about 58324.6159095797. The cubic root of 3401760821 is about 1503.9541334674.

The spelling of 3401760821 in words is "three billion, four hundred one million, seven hundred sixty thousand, eight hundred twenty-one".