436423961 has 2 divisors, whose sum is σ = 436423962. Its totient is φ = 436423960.

The previous prime is 436423957. The next prime is 436423969. The reversal of 436423961 is 169324634.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224430361 + 211993600 = 14981^2 + 14560^2 .

It is a cyclic number.

It is not a de Polignac number, because 436423961 - 2² = 436423957 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (436423969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218211980 + 218211981.

It is an arithmetic number, because the mean of its divisors is an integer number (218211981).

Almost surely, 2^436423961 is an apocalyptic number.

It is an amenable number.

436423961 is a deficient number, since it is larger than the sum of its proper divisors (1).

436423961 is an equidigital number, since it uses as much as digits as its factorization.

436423961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The square root of 436423961 is about 20890.7625758372. The cubic root of 436423961 is about 758.5243533228.

The spelling of 436423961 in words is "four hundred thirty-six million, four hundred twenty-three thousand, nine hundred sixty-one".