90683191 has 2 divisors, whose sum is σ = 90683192. Its totient is φ = 90683190.

The previous prime is 90683179. The next prime is 90683269. The reversal of 90683191 is 19138609.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90683191 - 2¹³ = 90674999 is a prime.

It is a super-2 number, since 2×90683191² = 16446882259884962, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90683191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90683101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45341595 + 45341596.

It is an arithmetic number, because the mean of its divisors is an integer number (45341596).

Almost surely, 2^90683191 is an apocalyptic number.

90683191 is a deficient number, since it is larger than the sum of its proper divisors (1).

90683191 is an equidigital number, since it uses as much as digits as its factorization.

90683191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 90683191 is about 9522.7722329162. The cubic root of 90683191 is about 449.2715638693.

The spelling of 90683191 in words is "ninety million, six hundred eighty-three thousand, one hundred ninety-one".