983979553 has 4 divisors (see below), whose sum is σ = 984998080. Its totient is φ = 982961028.

The previous prime is 983979551. The next prime is 983979559. The reversal of 983979553 is 355979389.

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.

It is a cyclic number.

It is not a de Polignac number, because 983979553 - 2¹ = 983979551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (983979551) 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, 507813 + ... + 509746.

It is an arithmetic number, because the mean of its divisors is an integer number (246249520).

Almost surely, 2^983979553 is an apocalyptic number.

It is an amenable number.

983979553 is a deficient number, since it is larger than the sum of its proper divisors (1018527).

983979553 is a wasteful number, since it uses less digits than its factorization.

983979553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018526.

The product of its digits is 9185400, while the sum is 58.

The square root of 983979553 is about 31368.4483677468. The cubic root of 983979553 is about 994.6310772556.

The spelling of 983979553 in words is "nine hundred eighty-three million, nine hundred seventy-nine thousand, five hundred fifty-three".