980640469 has 2 divisors, whose sum is σ = 980640470. Its totient is φ = 980640468.

The previous prime is 980640449. The next prime is 980640487. The reversal of 980640469 is 964046089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868068369 + 112572100 = 29463^2 + 10610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980640469 is a prime.

It is a super-2 number, since 2×980640469² = 1923311458881079922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980640449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490320234 + 490320235.

It is an arithmetic number, because the mean of its divisors is an integer number (490320235).

Almost surely, 2^980640469 is an apocalyptic number.

It is an amenable number.

980640469 is a deficient number, since it is larger than the sum of its proper divisors (1).

980640469 is an equidigital number, since it uses as much as digits as its factorization.

980640469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 980640469 is about 31315.1795300618. The cubic root of 980640469 is about 993.5047257546.

The spelling of 980640469 in words is "nine hundred eighty million, six hundred forty thousand, four hundred sixty-nine".