889986927477 has 4 divisors (see below), whose sum is σ = 1186649236640. Its totient is φ = 593324618316.

The previous prime is 889986927461. The next prime is 889986927481. The reversal of 889986927477 is 774729689988.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 889986927477 - 2⁴ = 889986927461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 889986927477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889986927877) 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, 148331154577 + ... + 148331154582.

It is an arithmetic number, because the mean of its divisors is an integer number (296662309160).

Almost surely, 2^889986927477 is an apocalyptic number.

It is an amenable number.

889986927477 is a deficient number, since it is larger than the sum of its proper divisors (296662309163).

889986927477 is a wasteful number, since it uses less digits than its factorization.

889986927477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296662309162.

The product of its digits is 6145155072, while the sum is 84.

The spelling of 889986927477 in words is "eight hundred eighty-nine billion, nine hundred eighty-six million, nine hundred twenty-seven thousand, four hundred seventy-seven".