91469377 has 2 divisors, whose sum is σ = 91469378. Its totient is φ = 91469376.

The previous prime is 91469369. The next prime is 91469419. The reversal of 91469377 is 77396419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 24245776 = 8199^2 + 4924^2 .

It is an emirp because it is prime and its reverse (77396419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91469377 - 2³ = 91469369 is a prime.

It is not a weakly prime, because it can be changed into another prime (91469177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45734688 + 45734689.

It is an arithmetic number, because the mean of its divisors is an integer number (45734689).

Almost surely, 2^91469377 is an apocalyptic number.

It is an amenable number.

91469377 is a deficient number, since it is larger than the sum of its proper divisors (1).

91469377 is an equidigital number, since it uses as much as digits as its factorization.

91469377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 91469377 is about 9563.9624110512. The cubic root of 91469377 is about 450.5661631088.

The spelling of 91469377 in words is "ninety-one million, four hundred sixty-nine thousand, three hundred seventy-seven".