80406019 has 2 divisors, whose sum is σ = 80406020. Its totient is φ = 80406018.

The previous prime is 80406013. The next prime is 80406031. The reversal of 80406019 is 91060408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80406019 - 2¹¹ = 80403971 is a prime.

It is a super-2 number, since 2×80406019² = 12930255782856722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80406013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40203009 + 40203010.

It is an arithmetic number, because the mean of its divisors is an integer number (40203010).

Almost surely, 2^80406019 is an apocalyptic number.

80406019 is a deficient number, since it is larger than the sum of its proper divisors (1).

80406019 is an equidigital number, since it uses as much as digits as its factorization.

80406019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 80406019 is about 8966.9403365920. The cubic root of 80406019 is about 431.6146594536.

The spelling of 80406019 in words is "eighty million, four hundred six thousand, nineteen".