1436434421 has 2 divisors, whose sum is σ = 1436434422. Its totient is φ = 1436434420.

The previous prime is 1436434361. The next prime is 1436434427. The reversal of 1436434421 is 1244346341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1035874225 + 400560196 = 32185^2 + 20014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436434421 - 2⁶ = 1436434357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1436434427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718217210 + 718217211.

It is an arithmetic number, because the mean of its divisors is an integer number (718217211).

Almost surely, 2^1436434421 is an apocalyptic number.

It is an amenable number.

1436434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1436434421 is an equidigital number, since it uses as much as digits as its factorization.

1436434421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 32.

The square root of 1436434421 is about 37900.3221754116. The cubic root of 1436434421 is about 1128.3104259075.

The spelling of 1436434421 in words is "one billion, four hundred thirty-six million, four hundred thirty-four thousand, four hundred twenty-one".