80942269 has 2 divisors, whose sum is σ = 80942270. Its totient is φ = 80942268.

The previous prime is 80942263. The next prime is 80942293. The reversal of 80942269 is 96224908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51294244 + 29648025 = 7162^2 + 5445^2 .

It is a cyclic number.

It is not a de Polignac number, because 80942269 - 2⁵ = 80942237 is a prime.

It is a super-2 number, since 2×80942269² = 13103301821736722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80942263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40471134 + 40471135.

It is an arithmetic number, because the mean of its divisors is an integer number (40471135).

Almost surely, 2^80942269 is an apocalyptic number.

It is an amenable number.

80942269 is a deficient number, since it is larger than the sum of its proper divisors (1).

80942269 is an equidigital number, since it uses as much as digits as its factorization.

80942269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 80942269 is about 8996.7921505390. The cubic root of 80942269 is about 432.5720534392.

The spelling of 80942269 in words is "eighty million, nine hundred forty-two thousand, two hundred sixty-nine".