980899901 has 2 divisors, whose sum is σ = 980899902. Its totient is φ = 980899900.

The previous prime is 980899897. The next prime is 980899921. The reversal of 980899901 is 109998089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940894276 + 40005625 = 30674^2 + 6325^2 .

It is a cyclic number.

It is not a de Polignac number, because 980899901 - 2² = 980899897 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980899921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490449950 + 490449951.

It is an arithmetic number, because the mean of its divisors is an integer number (490449951).

Almost surely, 2^980899901 is an apocalyptic number.

It is an amenable number.

980899901 is a deficient number, since it is larger than the sum of its proper divisors (1).

980899901 is an equidigital number, since it uses as much as digits as its factorization.

980899901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 53.

The square root of 980899901 is about 31319.3215284112. The cubic root of 980899901 is about 993.5923297917.

The spelling of 980899901 in words is "nine hundred eighty million, eight hundred ninety-nine thousand, nine hundred one".