3430901621 has 4 divisors (see below), whose sum is σ = 3921030432. Its totient is φ = 2940772812.

The previous prime is 3430901609. The next prime is 3430901647. The reversal of 3430901621 is 1261090343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3430901621 - 2³⁰ = 2357159797 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 (3430901671) 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, 245064395 + ... + 245064408.

It is an arithmetic number, because the mean of its divisors is an integer number (980257608).

Almost surely, 2^3430901621 is an apocalyptic number.

It is an amenable number.

3430901621 is a deficient number, since it is larger than the sum of its proper divisors (490128811).

3430901621 is an equidigital number, since it uses as much as digits as its factorization.

3430901621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490128810.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 3430901621 is about 58573.8988031359. The cubic root of 3430901621 is about 1508.2364131844.

Adding to 3430901621 its reverse (1261090343), we get a palindrome (4691991964).

The spelling of 3430901621 in words is "three billion, four hundred thirty million, nine hundred one thousand, six hundred twenty-one".