989407 has 4 divisors (see below), whose sum is σ = 991440. Its totient is φ = 987376.

The previous prime is 989381. The next prime is 989411. The reversal of 989407 is 704989.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 989407 - 2⁷ = 989279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198 + ... + 1420.

It is an arithmetic number, because the mean of its divisors is an integer number (247860).

2⁹⁸⁹⁴⁰⁷ is an apocalyptic number.

989407 is a deficient number, since it is larger than the sum of its proper divisors (2033).

989407 is a wasteful number, since it uses less digits than its factorization.

989407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 989407 is about 994.6893987572. The cubic root of 989407 is about 99.6456458143.

The spelling of 989407 in words is "nine hundred eighty-nine thousand, four hundred seven".