980403817 has 2 divisors, whose sum is σ = 980403818. Its totient is φ = 980403816.

The previous prime is 980403803. The next prime is 980403829. The reversal of 980403817 is 718304089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 779303056 + 201100761 = 27916^2 + 14181^2 .

It is a cyclic number.

It is not a de Polignac number, because 980403817 - 2¹¹ = 980401769 is a prime.

It is a super-2 number, since 2×980403817² = 1922383288776338978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 980403817.

It is not a weakly prime, because it can be changed into another prime (980403887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490201908 + 490201909.

It is an arithmetic number, because the mean of its divisors is an integer number (490201909).

Almost surely, 2^980403817 is an apocalyptic number.

It is an amenable number.

980403817 is a deficient number, since it is larger than the sum of its proper divisors (1).

980403817 is an equidigital number, since it uses as much as digits as its factorization.

980403817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 980403817 is about 31311.4007511641. The cubic root of 980403817 is about 993.4248005074.

The spelling of 980403817 in words is "nine hundred eighty million, four hundred three thousand, eight hundred seventeen".