89785976439477 has 16 divisors (see below), whose sum is σ = 120597209248320. Its totient is φ = 59416182897792.

The previous prime is 89785976439431. The next prime is 89785976439521. The reversal of 89785976439477 is 77493467958798.

It is not a de Polignac number, because 89785976439477 - 2⁸ = 89785976439221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89785976439077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16671798 + ... + 21389735.

It is an arithmetic number, because the mean of its divisors is an integer number (7537325578020).

Almost surely, 2^{89785976439477} is an apocalyptic number.

It is an amenable number.

89785976439477 is a deficient number, since it is larger than the sum of its proper divisors (30811232808843).

89785976439477 is a wasteful number, since it uses less digits than its factorization.

89785976439477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38067332.

The product of its digits is 161310320640, while the sum is 93.

The spelling of 89785976439477 in words is "eighty-nine trillion, seven hundred eighty-five billion, nine hundred seventy-six million, four hundred thirty-nine thousand, four hundred seventy-seven".