80990137 has 2 divisors, whose sum is σ = 80990138. Its totient is φ = 80990136.

The previous prime is 80990131. The next prime is 80990149. The reversal of 80990137 is 73109908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80658361 + 331776 = 8981^2 + 576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80990137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80990096 and 80990105.

It is not a weakly prime, because it can be changed into another prime (80990131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40495068 + 40495069.

It is an arithmetic number, because the mean of its divisors is an integer number (40495069).

Almost surely, 2^80990137 is an apocalyptic number.

It is an amenable number.

80990137 is a deficient number, since it is larger than the sum of its proper divisors (1).

80990137 is an equidigital number, since it uses as much as digits as its factorization.

80990137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 80990137 is about 8999.4520388744. The cubic root of 80990137 is about 432.6573087652.

The spelling of 80990137 in words is "eighty million, nine hundred ninety thousand, one hundred thirty-seven".