989344403 has 2 divisors, whose sum is σ = 989344404. Its totient is φ = 989344402.

The previous prime is 989344339. The next prime is 989344409. The reversal of 989344403 is 304443989.

It is a strong prime.

It is an emirp because it is prime and its reverse (304443989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989344403 - 2⁶ = 989344339 is a prime.

It is not a weakly prime, because it can be changed into another prime (989344409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494672201 + 494672202.

It is an arithmetic number, because the mean of its divisors is an integer number (494672202).

Almost surely, 2^989344403 is an apocalyptic number.

989344403 is a deficient number, since it is larger than the sum of its proper divisors (1).

989344403 is an equidigital number, since it uses as much as digits as its factorization.

989344403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 989344403 is about 31453.8455995447. The cubic root of 989344403 is about 996.4354433665.

The spelling of 989344403 in words is "nine hundred eighty-nine million, three hundred forty-four thousand, four hundred three".