9000990071 has 2 divisors, whose sum is σ = 9000990072. Its totient is φ = 9000990070.

The previous prime is 9000989971. The next prime is 9000990083. The reversal of 9000990071 is 1700990009.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9000990071 - 2¹⁰ = 9000989047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9000990091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4500495035 + 4500495036.

It is an arithmetic number, because the mean of its divisors is an integer number (4500495036).

Almost surely, 2^9000990071 is an apocalyptic number.

9000990071 is a deficient number, since it is larger than the sum of its proper divisors (1).

9000990071 is an equidigital number, since it uses as much as digits as its factorization.

9000990071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 9000990071 is about 94873.5477938925. The cubic root of 9000990071 is about 2080.1600954651.

The spelling of 9000990071 in words is "nine billion, nine hundred ninety thousand, seventy-one".