3408721501 has 4 divisors (see below), whose sum is σ = 3438887292. Its totient is φ = 3378555712.

The previous prime is 3408721453. The next prime is 3408721507. The reversal of 3408721501 is 1051278043.

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 1402577401 + 2006144100 = 37451^2 + 44790^2 .

It is a cyclic number.

It is not a de Polignac number, because 3408721501 - 2⁷ = 3408721373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3408721507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15082726 + ... + 15082951.

It is an arithmetic number, because the mean of its divisors is an integer number (859721823).

Almost surely, 2^3408721501 is an apocalyptic number.

It is an amenable number.

3408721501 is a deficient number, since it is larger than the sum of its proper divisors (30165791).

3408721501 is a wasteful number, since it uses less digits than its factorization.

3408721501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30165790.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 3408721501 is about 58384.2573045166. The cubic root of 3408721501 is about 1504.9792311420.

Adding to 3408721501 its reverse (1051278043), we get a palindrome (4459999544).

The spelling of 3408721501 in words is "three billion, four hundred eight million, seven hundred twenty-one thousand, five hundred one".