990951371 has 2 divisors, whose sum is σ = 990951372. Its totient is φ = 990951370.

The previous prime is 990951349. The next prime is 990951391. The reversal of 990951371 is 173159099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990951371 - 2²² = 986757067 is a prime.

It is not a weakly prime, because it can be changed into another prime (990951391) 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, 495475685 + 495475686.

It is an arithmetic number, because the mean of its divisors is an integer number (495475686).

Almost surely, 2^990951371 is an apocalyptic number.

990951371 is a deficient number, since it is larger than the sum of its proper divisors (1).

990951371 is an equidigital number, since it uses as much as digits as its factorization.

990951371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76545, while the sum is 44.

The square root of 990951371 is about 31479.3800923716. The cubic root of 990951371 is about 996.9746468015.

The spelling of 990951371 in words is "nine hundred ninety million, nine hundred fifty-one thousand, three hundred seventy-one".