990535471 has 2 divisors, whose sum is σ = 990535472. Its totient is φ = 990535470.

The previous prime is 990535463. The next prime is 990535499. The reversal of 990535471 is 174535099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990535471 - 2³ = 990535463 is a prime.

It is a super-3 number, since 3×990535471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990535171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495267735 + 495267736.

It is an arithmetic number, because the mean of its divisors is an integer number (495267736).

Almost surely, 2^990535471 is an apocalyptic number.

990535471 is a deficient number, since it is larger than the sum of its proper divisors (1).

990535471 is an equidigital number, since it uses as much as digits as its factorization.

990535471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 990535471 is about 31472.7734875718. The cubic root of 990535471 is about 996.8351512994.

The spelling of 990535471 in words is "nine hundred ninety million, five hundred thirty-five thousand, four hundred seventy-one".