80936437 has 2 divisors, whose sum is σ = 80936438. Its totient is φ = 80936436.

The previous prime is 80936431. The next prime is 80936489. The reversal of 80936437 is 73463908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72607441 + 8328996 = 8521^2 + 2886^2 .

It is a cyclic number.

It is not a de Polignac number, because 80936437 - 2¹⁹ = 80412149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80936437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80936431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40468218 + 40468219.

It is an arithmetic number, because the mean of its divisors is an integer number (40468219).

Almost surely, 2^80936437 is an apocalyptic number.

It is an amenable number.

80936437 is a deficient number, since it is larger than the sum of its proper divisors (1).

80936437 is an equidigital number, since it uses as much as digits as its factorization.

80936437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 80936437 is about 8996.4680291768. The cubic root of 80936437 is about 432.5616640557.

The spelling of 80936437 in words is "eighty million, nine hundred thirty-six thousand, four hundred thirty-seven".