91928141 has 2 divisors, whose sum is σ = 91928142. Its totient is φ = 91928140.

The previous prime is 91928107. The next prime is 91928147. The reversal of 91928141 is 14182919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46635241 + 45292900 = 6829^2 + 6730^2 .

It is a cyclic number.

It is not a de Polignac number, because 91928141 - 2¹⁰ = 91927117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91928147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45964070 + 45964071.

It is an arithmetic number, because the mean of its divisors is an integer number (45964071).

Almost surely, 2^91928141 is an apocalyptic number.

It is an amenable number.

91928141 is a deficient number, since it is larger than the sum of its proper divisors (1).

91928141 is an equidigital number, since it uses as much as digits as its factorization.

91928141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 35.

The square root of 91928141 is about 9587.9164055597. The cubic root of 91928141 is about 451.3181777114.

The spelling of 91928141 in words is "ninety-one million, nine hundred twenty-eight thousand, one hundred forty-one".