983084278921 has 2 divisors, whose sum is σ = 983084278922. Its totient is φ = 983084278920.

The previous prime is 983084278919. The next prime is 983084278933. The reversal of 983084278921 is 129872480389.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709334528400 + 273749750521 = 842220^2 + 523211^2 .

It is an emirp because it is prime and its reverse (129872480389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 983084278921 - 2¹ = 983084278919 is a prime.

It is a super-4 number, since 4×983084278921⁴ (a number of 49 digits) contains 4444 as substring.

Together with 983084278919, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 983084278921.

It is not a weakly prime, because it can be changed into another prime (983084272921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491542139460 + 491542139461.

It is an arithmetic number, because the mean of its divisors is an integer number (491542139461).

Almost surely, 2^983084278921 is an apocalyptic number.

It is an amenable number.

983084278921 is a deficient number, since it is larger than the sum of its proper divisors (1).

983084278921 is an equidigital number, since it uses as much as digits as its factorization.

983084278921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 983084278921 in words is "nine hundred eighty-three billion, eighty-four million, two hundred seventy-eight thousand, nine hundred twenty-one".