434500021 has 8 divisors (see below), whose sum is σ = 438177600. Its totient is φ = 430830048.

The previous prime is 434500009. The next prime is 434500039. The reversal of 434500021 is 120005434.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434500021 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 (434500091) 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, 190530 + ... + 192796.

It is an arithmetic number, because the mean of its divisors is an integer number (54772200).

Almost surely, 2^434500021 is an apocalyptic number.

It is an amenable number.

434500021 is a deficient number, since it is larger than the sum of its proper divisors (3677579).

434500021 is a wasteful number, since it uses less digits than its factorization.

434500021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 434500021 is about 20844.6640894019. The cubic root of 434500021 is about 757.4080801373.

Adding to 434500021 its reverse (120005434), we get a palindrome (554505455).

The spelling of 434500021 in words is "four hundred thirty-four million, five hundred thousand, twenty-one".