452239009 has 2 divisors, whose sum is σ = 452239010. Its totient is φ = 452239008.

The previous prime is 452239003. The next prime is 452239013. The reversal of 452239009 is 900932254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260499600 + 191739409 = 16140^2 + 13847^2 .

It is a cyclic number.

It is not a de Polignac number, because 452239009 - 2¹³ = 452230817 is a prime.

It is a super-2 number, since 2×452239009² = 409040242522604162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (452239003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226119504 + 226119505.

It is an arithmetic number, because the mean of its divisors is an integer number (226119505).

Almost surely, 2^452239009 is an apocalyptic number.

It is an amenable number.

452239009 is a deficient number, since it is larger than the sum of its proper divisors (1).

452239009 is an equidigital number, since it uses as much as digits as its factorization.

452239009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 452239009 is about 21265.9119014445. The cubic root of 452239009 is about 767.5782738024.

The spelling of 452239009 in words is "four hundred fifty-two million, two hundred thirty-nine thousand, nine".