434799721 has 2 divisors, whose sum is σ = 434799722. Its totient is φ = 434799720.

The previous prime is 434799661. The next prime is 434799727. The reversal of 434799721 is 127997434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429981696 + 4818025 = 20736^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 434799721 - 2¹⁷ = 434668649 is a prime.

It is not a weakly prime, because it can be changed into another prime (434799727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217399860 + 217399861.

It is an arithmetic number, because the mean of its divisors is an integer number (217399861).

Almost surely, 2^434799721 is an apocalyptic number.

It is an amenable number.

434799721 is a deficient number, since it is larger than the sum of its proper divisors (1).

434799721 is an equidigital number, since it uses as much as digits as its factorization.

434799721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 434799721 is about 20851.8517403131. The cubic root of 434799721 is about 757.5821829528.

The spelling of 434799721 in words is "four hundred thirty-four million, seven hundred ninety-nine thousand, seven hundred twenty-one".