89978311 has 2 divisors, whose sum is σ = 89978312. Its totient is φ = 89978310.

The previous prime is 89978303. The next prime is 89978321. The reversal of 89978311 is 11387998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89978311 - 2³ = 89978303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89978321) 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, 44989155 + 44989156.

It is an arithmetic number, because the mean of its divisors is an integer number (44989156).

Almost surely, 2^89978311 is an apocalyptic number.

89978311 is a deficient number, since it is larger than the sum of its proper divisors (1).

89978311 is an equidigital number, since it uses as much as digits as its factorization.

89978311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The square root of 89978311 is about 9485.6898009581. The cubic root of 89978311 is about 448.1044728052.

The spelling of 89978311 in words is "eighty-nine million, nine hundred seventy-eight thousand, three hundred eleven".