990651301 has 2 divisors, whose sum is σ = 990651302. Its totient is φ = 990651300.

The previous prime is 990651287. The next prime is 990651323. The reversal of 990651301 is 103156099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981318276 + 9333025 = 31326^2 + 3055^2 .

It is an emirp because it is prime and its reverse (103156099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990651301 - 2⁵ = 990651269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990651401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495325650 + 495325651.

It is an arithmetic number, because the mean of its divisors is an integer number (495325651).

Almost surely, 2^990651301 is an apocalyptic number.

It is an amenable number.

990651301 is a deficient number, since it is larger than the sum of its proper divisors (1).

990651301 is an equidigital number, since it uses as much as digits as its factorization.

990651301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 990651301 is about 31474.6135957219. The cubic root of 990651301 is about 996.8740053396.

The spelling of 990651301 in words is "nine hundred ninety million, six hundred fifty-one thousand, three hundred one".