90000993371 has 2 divisors, whose sum is σ = 90000993372. Its totient is φ = 90000993370.

The previous prime is 90000993367. The next prime is 90000993373. The reversal of 90000993371 is 17339900009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90000993371 - 2² = 90000993367 is a prime.

It is a Sophie Germain prime.

Together with 90000993373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90000993373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45000496685 + 45000496686.

It is an arithmetic number, because the mean of its divisors is an integer number (45000496686).

Almost surely, 2^90000993371 is an apocalyptic number.

90000993371 is a deficient number, since it is larger than the sum of its proper divisors (1).

90000993371 is an equidigital number, since it uses as much as digits as its factorization.

90000993371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 41.

The spelling of 90000993371 in words is "ninety billion, nine hundred ninety-three thousand, three hundred seventy-one".