434103821 has 2 divisors, whose sum is σ = 434103822. Its totient is φ = 434103820.

The previous prime is 434103799. The next prime is 434103827. The reversal of 434103821 is 128301434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265233796 + 168870025 = 16286^2 + 12995^2 .

It is a cyclic number.

It is not a de Polignac number, because 434103821 - 2¹⁰ = 434102797 is a prime.

It is a super-2 number, since 2×434103821² = 376892254813600082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434103827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217051910 + 217051911.

It is an arithmetic number, because the mean of its divisors is an integer number (217051911).

Almost surely, 2^434103821 is an apocalyptic number.

It is an amenable number.

434103821 is a deficient number, since it is larger than the sum of its proper divisors (1).

434103821 is an equidigital number, since it uses as much as digits as its factorization.

434103821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 434103821 is about 20835.1582907354. The cubic root of 434103821 is about 757.1777952702.

The spelling of 434103821 in words is "four hundred thirty-four million, one hundred three thousand, eight hundred twenty-one".