80889619 has 2 divisors, whose sum is σ = 80889620. Its totient is φ = 80889618.

The previous prime is 80889617. The next prime is 80889691. The reversal of 80889619 is 91698808.

It is a happy number.

Together with next prime (80889691) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80889619 - 2¹ = 80889617 is a prime.

It is a super-2 number, since 2×80889619² = 13086260923930322, which contains 22 as substring.

Together with 80889617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80889617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40444809 + 40444810.

It is an arithmetic number, because the mean of its divisors is an integer number (40444810).

Almost surely, 2^80889619 is an apocalyptic number.

80889619 is a deficient number, since it is larger than the sum of its proper divisors (1).

80889619 is an equidigital number, since it uses as much as digits as its factorization.

80889619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 80889619 is about 8993.8656316403. The cubic root of 80889619 is about 432.4782423037.

The spelling of 80889619 in words is "eighty million, eight hundred eighty-nine thousand, six hundred nineteen".