989331454 has 4 divisors (see below), whose sum is σ = 1483997184. Its totient is φ = 494665726.

The previous prime is 989331451. The next prime is 989331479. The reversal of 989331454 is 454133989.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454133989 = 139 ⋅3267151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989331451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247332862 + ... + 247332865.

It is an arithmetic number, because the mean of its divisors is an integer number (370999296).

Almost surely, 2^989331454 is an apocalyptic number.

989331454 is a deficient number, since it is larger than the sum of its proper divisors (494665730).

989331454 is a wasteful number, since it uses less digits than its factorization.

989331454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494665729.

The product of its digits is 466560, while the sum is 46.

The square root of 989331454 is about 31453.6397575861. The cubic root of 989331454 is about 996.4310960773.

The spelling of 989331454 in words is "nine hundred eighty-nine million, three hundred thirty-one thousand, four hundred fifty-four".