980342821 has 2 divisors, whose sum is σ = 980342822. Its totient is φ = 980342820.

The previous prime is 980342813. The next prime is 980342827. The reversal of 980342821 is 128243089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 977500225 + 2842596 = 31265^2 + 1686^2 .

It is a cyclic number.

It is not a de Polignac number, because 980342821 - 2³ = 980342813 is a prime.

It is a super-2 number, since 2×980342821² = 1922144093372476082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980342827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490171410 + 490171411.

It is an arithmetic number, because the mean of its divisors is an integer number (490171411).

Almost surely, 2^980342821 is an apocalyptic number.

It is an amenable number.

980342821 is a deficient number, since it is larger than the sum of its proper divisors (1).

980342821 is an equidigital number, since it uses as much as digits as its factorization.

980342821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 980342821 is about 31310.4267137962. The cubic root of 980342821 is about 993.4041980458.

The spelling of 980342821 in words is "nine hundred eighty million, three hundred forty-two thousand, eight hundred twenty-one".