3398479621 has 8 divisors (see below), whose sum is σ = 3463712280. Its totient is φ = 3333288192.

The previous prime is 3398479597. The next prime is 3398479649. The reversal of 3398479621 is 1269748933.

It can be written as a sum of positive squares in 4 ways, for example, as 603242721 + 2795236900 = 24561^2 + 52870^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3398479621 - 2¹¹ = 3398477573 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 (3398479661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194785 + ... + 211513.

It is an arithmetic number, because the mean of its divisors is an integer number (432964035).

Almost surely, 2^3398479621 is an apocalyptic number.

It is an amenable number.

3398479621 is a deficient number, since it is larger than the sum of its proper divisors (65232659).

3398479621 is a wasteful number, since it uses less digits than its factorization.

3398479621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20615.

The product of its digits is 1959552, while the sum is 52.

The square root of 3398479621 is about 58296.4803483023. The cubic root of 3398479621 is about 1503.4704269361.

The spelling of 3398479621 in words is "three billion, three hundred ninety-eight million, four hundred seventy-nine thousand, six hundred twenty-one".