989344405 has 16 divisors (see below), whose sum is σ = 1357338240. Its totient is φ = 678146112.

The previous prime is 989344403. The next prime is 989344409. The reversal of 989344405 is 504443989.

It is not a de Polignac number, because 989344405 - 2¹ = 989344403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989344403) 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, 145747 + ... + 152383.

It is an arithmetic number, because the mean of its divisors is an integer number (84833640).

Almost surely, 2^989344405 is an apocalyptic number.

It is an amenable number.

989344405 is a deficient number, since it is larger than the sum of its proper divisors (367993835).

989344405 is a wasteful number, since it uses less digits than its factorization.

989344405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10908.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 989344405 is about 31453.8456313374. The cubic root of 989344405 is about 996.4354440379.

The spelling of 989344405 in words is "nine hundred eighty-nine million, three hundred forty-four thousand, four hundred five".