990451711 has 2 divisors, whose sum is σ = 990451712. Its totient is φ = 990451710.

The previous prime is 990451669. The next prime is 990451769. The reversal of 990451711 is 117154099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990451711 - 2⁹ = 990451199 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 (990451211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495225855 + 495225856.

It is an arithmetic number, because the mean of its divisors is an integer number (495225856).

Almost surely, 2^990451711 is an apocalyptic number.

990451711 is a deficient number, since it is larger than the sum of its proper divisors (1).

990451711 is an equidigital number, since it uses as much as digits as its factorization.

990451711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 990451711 is about 31471.4427854841. The cubic root of 990451711 is about 996.8070529397.

The spelling of 990451711 in words is "nine hundred ninety million, four hundred fifty-one thousand, seven hundred eleven".