89405471939 has 4 divisors (see below), whose sum is σ = 102177682224. Its totient is φ = 76633261656.

The previous prime is 89405471927. The next prime is 89405471957. The reversal of 89405471939 is 93917450498.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 89405471939 - 2⁴ = 89405471923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89405470939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6386105132 + ... + 6386105145.

It is an arithmetic number, because the mean of its divisors is an integer number (25544420556).

Almost surely, 2^89405471939 is an apocalyptic number.

89405471939 is a deficient number, since it is larger than the sum of its proper divisors (12772210285).

89405471939 is a wasteful number, since it uses less digits than its factorization.

89405471939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12772210284.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 89405471939 in words is "eighty-nine billion, four hundred five million, four hundred seventy-one thousand, nine hundred thirty-nine".