983403438889 has 45 divisors (see below), whose sum is σ = 1080089216871. Its totient is φ = 895356300960.

The previous prime is 983403438883. The next prime is 983403438893. The reversal of 983403438889 is 988834304389.

The square root of 983403438889 is 991667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 47385888489 + 936017550400 = 217683^2 + 967480^2 .

It is not a de Polignac number, because 983403438889 - 2³⁷ = 845964485417 is a prime.

It is a super-2 number, since 2×983403438889² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (983403438883) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 14677663234 + ... + 14677663300.

Almost surely, 2^983403438889 is an apocalyptic number.

983403438889 is the 991667-th square number.

983403438889 is the 495834-th centered octagonal number.

It is an amenable number.

983403438889 is a deficient number, since it is larger than the sum of its proper divisors (96685777982).

983403438889 is an frugal number, since it uses more digits than its factorization.

983403438889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 67.

The spelling of 983403438889 in words is "nine hundred eighty-three billion, four hundred three million, four hundred thirty-eight thousand, eight hundred eighty-nine".