89750366891 has 2 divisors, whose sum is σ = 89750366892. Its totient is φ = 89750366890.

The previous prime is 89750366869. The next prime is 89750366903. The reversal of 89750366891 is 19866305798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89750366891 - 2¹⁸ = 89750104747 is a prime.

It is not a weakly prime, because it can be changed into another prime (89750366821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44875183445 + 44875183446.

It is an arithmetic number, because the mean of its divisors is an integer number (44875183446).

Almost surely, 2^89750366891 is an apocalyptic number.

89750366891 is a deficient number, since it is larger than the sum of its proper divisors (1).

89750366891 is an equidigital number, since it uses as much as digits as its factorization.

89750366891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 89750366891 in words is "eighty-nine billion, seven hundred fifty million, three hundred sixty-six thousand, eight hundred ninety-one".