3387389621 has 32 divisors (see below), whose sum is σ = 4512879360. Its totient is φ = 2461363200.

The previous prime is 3387389591. The next prime is 3387389633. The reversal of 3387389621 is 1269837833.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3387389621 - 2⁶ = 3387389557 is a prime.

It is a super-2 number, since 2×3387389621² = 22948816888917047282, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3387389621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3387389021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130811 + ... + 154551.

It is an arithmetic number, because the mean of its divisors is an integer number (141027480).

Almost surely, 2^3387389621 is an apocalyptic number.

It is an amenable number.

3387389621 is a deficient number, since it is larger than the sum of its proper divisors (1125489739).

3387389621 is a wasteful number, since it uses less digits than its factorization.

3387389621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23885.

The product of its digits is 1306368, while the sum is 50.

The square root of 3387389621 is about 58201.2853895857. The cubic root of 3387389621 is about 1501.8332579382.

The spelling of 3387389621 in words is "three billion, three hundred eighty-seven million, three hundred eighty-nine thousand, six hundred twenty-one".