80400277 has 2 divisors, whose sum is σ = 80400278. Its totient is φ = 80400276.

The previous prime is 80400263. The next prime is 80400283. The reversal of 80400277 is 77200408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78694641 + 1705636 = 8871^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 80400277 - 2¹¹ = 80398229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80400217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40200138 + 40200139.

It is an arithmetic number, because the mean of its divisors is an integer number (40200139).

Almost surely, 2^80400277 is an apocalyptic number.

It is an amenable number.

80400277 is a deficient number, since it is larger than the sum of its proper divisors (1).

80400277 is an equidigital number, since it uses as much as digits as its factorization.

80400277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 80400277 is about 8966.6201547740. The cubic root of 80400277 is about 431.6043849725.

The spelling of 80400277 in words is "eighty million, four hundred thousand, two hundred seventy-seven".