90946191 has 16 divisors (see below), whose sum is σ = 139186944. Its totient is φ = 51743424.

The previous prime is 90946169. The next prime is 90946201. The reversal of 90946191 is 19164909.

It is not a de Polignac number, because 90946191 - 2¹¹ = 90944143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90946151) 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 in 15 ways as a sum of consecutive naturals, for example, 4401 + ... + 14186.

It is an arithmetic number, because the mean of its divisors is an integer number (8699184).

Almost surely, 2^90946191 is an apocalyptic number.

90946191 is a deficient number, since it is larger than the sum of its proper divisors (48240753).

90946191 is a wasteful number, since it uses less digits than its factorization.

90946191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18830.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 90946191 is about 9536.5712391824. The cubic root of 90946191 is about 449.7054714684.

The spelling of 90946191 in words is "ninety million, nine hundred forty-six thousand, one hundred ninety-one".