329926704421 has 4 divisors (see below), whose sum is σ = 331833795372. Its totient is φ = 328019613472.

The previous prime is 329926704403. The next prime is 329926704461. The reversal of 329926704421 is 124407629923.

It is a happy number.

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 161917712100 + 168008992321 = 402390^2 + 409889^2 .

It is a cyclic number.

It is not a de Polignac number, because 329926704421 - 2¹⁷ = 329926573349 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 (329926704461) 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, 953545216 + ... + 953545561.

It is an arithmetic number, because the mean of its divisors is an integer number (82958448843).

Almost surely, 2^329926704421 is an apocalyptic number.

It is an amenable number.

329926704421 is a deficient number, since it is larger than the sum of its proper divisors (1907090951).

329926704421 is a wasteful number, since it uses less digits than its factorization.

329926704421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907090950.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 329926704421 in words is "three hundred twenty-nine billion, nine hundred twenty-six million, seven hundred four thousand, four hundred twenty-one".