89742489477 has 8 divisors (see below), whose sum is σ = 122439365664. Its totient is φ = 58436969808.

The previous prime is 89742489457. The next prime is 89742489481. The reversal of 89742489477 is 77498424798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89742489477 - 2¹⁹ = 89741965189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89742489407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347838978 + ... + 347839235.

It is an arithmetic number, because the mean of its divisors is an integer number (15304920708).

Almost surely, 2^89742489477 is an apocalyptic number.

It is an amenable number.

89742489477 is a deficient number, since it is larger than the sum of its proper divisors (32696876187).

89742489477 is a wasteful number, since it uses less digits than its factorization.

89742489477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695678259.

The product of its digits is 227598336, while the sum is 69.

The spelling of 89742489477 in words is "eighty-nine billion, seven hundred forty-two million, four hundred eighty-nine thousand, four hundred seventy-seven".