80870269 has 2 divisors, whose sum is σ = 80870270. Its totient is φ = 80870268.

The previous prime is 80870249. The next prime is 80870287. The reversal of 80870269 is 96207808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 10478169 = 8390^2 + 3237^2 .

It is a cyclic number.

It is not a de Polignac number, because 80870269 - 2¹³ = 80862077 is a prime.

It is a super-2 number, since 2×80870269² = 13080000816264722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80870249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40435134 + 40435135.

It is an arithmetic number, because the mean of its divisors is an integer number (40435135).

Almost surely, 2^80870269 is an apocalyptic number.

It is an amenable number.

80870269 is a deficient number, since it is larger than the sum of its proper divisors (1).

80870269 is an equidigital number, since it uses as much as digits as its factorization.

80870269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 80870269 is about 8992.7898340837. The cubic root of 80870269 is about 432.4437544775.

The spelling of 80870269 in words is "eighty million, eight hundred seventy thousand, two hundred sixty-nine".