91699403 has 2 divisors, whose sum is σ = 91699404. Its totient is φ = 91699402.

The previous prime is 91699369. The next prime is 91699417. The reversal of 91699403 is 30499619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91699403 - 2¹⁰ = 91698379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (91699603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45849701 + 45849702.

It is an arithmetic number, because the mean of its divisors is an integer number (45849702).

Almost surely, 2^91699403 is an apocalyptic number.

91699403 is a deficient number, since it is larger than the sum of its proper divisors (1).

91699403 is an equidigital number, since it uses as much as digits as its factorization.

91699403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 91699403 is about 9575.9805242074. The cubic root of 91699403 is about 450.9435395878.

The spelling of 91699403 in words is "ninety-one million, six hundred ninety-nine thousand, four hundred three".