980029621 has 2 divisors, whose sum is σ = 980029622. Its totient is φ = 980029620.

The previous prime is 980029591. The next prime is 980029643. The reversal of 980029621 is 126920089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955675396 + 24354225 = 30914^2 + 4935^2 .

It is a cyclic number.

It is not a de Polignac number, because 980029621 - 2¹³ = 980021429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980029021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490014810 + 490014811.

It is an arithmetic number, because the mean of its divisors is an integer number (490014811).

Almost surely, 2^980029621 is an apocalyptic number.

It is an amenable number.

980029621 is a deficient number, since it is larger than the sum of its proper divisors (1).

980029621 is an equidigital number, since it uses as much as digits as its factorization.

980029621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 980029621 is about 31305.4247854905. The cubic root of 980029621 is about 993.2983958279.

The spelling of 980029621 in words is "nine hundred eighty million, twenty-nine thousand, six hundred twenty-one".