89279959987 has 2 divisors, whose sum is σ = 89279959988. Its totient is φ = 89279959986.

The previous prime is 89279959957. The next prime is 89279960047. The reversal of 89279959987 is 78995997298.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89279959987 - 2⁷ = 89279959859 is a prime.

It is a super-2 number, since 2×89279959987² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89279959987.

It is not a weakly prime, because it can be changed into another prime (89279959957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44639979993 + 44639979994.

It is an arithmetic number, because the mean of its divisors is an integer number (44639979994).

Almost surely, 2^89279959987 is an apocalyptic number.

89279959987 is a deficient number, since it is larger than the sum of its proper divisors (1).

89279959987 is an equidigital number, since it uses as much as digits as its factorization.

89279959987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1851776640, while the sum is 82.

The spelling of 89279959987 in words is "eighty-nine billion, two hundred seventy-nine million, nine hundred fifty-nine thousand, nine hundred eighty-seven".