434221394 has 8 divisors (see below), whose sum is σ = 652925820. Its totient is φ = 216579456.

The previous prime is 434221387. The next prime is 434221397. The reversal of 434221394 is 493122434.

It can be written as a sum of positive squares in 2 ways, for example, as 307546369 + 126675025 = 17537^2 + 11255^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 434221394.

It is not an unprimeable number, because it can be changed into a prime (434221397) 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, 264599 + ... + 266234.

Almost surely, 2^434221394 is an apocalyptic number.

434221394 is a deficient number, since it is larger than the sum of its proper divisors (218704426).

434221394 is a wasteful number, since it uses less digits than its factorization.

434221394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531244.

The product of its digits is 20736, while the sum is 32.

The square root of 434221394 is about 20837.9796045586. The cubic root of 434221394 is about 757.2461472978.

The spelling of 434221394 in words is "four hundred thirty-four million, two hundred twenty-one thousand, three hundred ninety-four".