989455417 has 4 divisors (see below), whose sum is σ = 993106816. Its totient is φ = 985804020.

The previous prime is 989455409. The next prime is 989455483. The reversal of 989455417 is 714554989.

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, and also an emirpimes, since its reverse is a distinct semiprime: 714554989 = 37 ⋅19312297.

It is a cyclic number.

It is not a de Polignac number, because 989455417 - 2³ = 989455409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989455717) 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, 1825293 + ... + 1825834.

It is an arithmetic number, because the mean of its divisors is an integer number (248276704).

Almost surely, 2^989455417 is an apocalyptic number.

It is an amenable number.

989455417 is a deficient number, since it is larger than the sum of its proper divisors (3651399).

989455417 is a wasteful number, since it uses less digits than its factorization.

989455417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651398.

The product of its digits is 1814400, while the sum is 52.

The square root of 989455417 is about 31455.6102627178. The cubic root of 989455417 is about 996.4727118670.

The spelling of 989455417 in words is "nine hundred eighty-nine million, four hundred fifty-five thousand, four hundred seventeen".