80433209 has 2 divisors, whose sum is σ = 80433210. Its totient is φ = 80433208.

The previous prime is 80433181. The next prime is 80433217. The reversal of 80433209 is 90233408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80048809 + 384400 = 8947^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80433209 is a prime.

It is a super-2 number, since 2×80433209² = 12939002220075362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80433229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40216604 + 40216605.

It is an arithmetic number, because the mean of its divisors is an integer number (40216605).

Almost surely, 2^80433209 is an apocalyptic number.

It is an amenable number.

80433209 is a deficient number, since it is larger than the sum of its proper divisors (1).

80433209 is an equidigital number, since it uses as much as digits as its factorization.

80433209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 80433209 is about 8968.4563331713. The cubic root of 80433209 is about 431.6633053973.

The spelling of 80433209 in words is "eighty million, four hundred thirty-three thousand, two hundred nine".