91200469 has 2 divisors, whose sum is σ = 91200470. Its totient is φ = 91200468.

The previous prime is 91200401. The next prime is 91200479. The reversal of 91200469 is 96400219.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49533444 + 41667025 = 7038^2 + 6455^2 .

It is a cyclic number.

It is not a de Polignac number, because 91200469 - 2⁷ = 91200341 is a prime.

It is a super-2 number, since 2×91200469² = 16635051091639922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91200469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91200479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45600234 + 45600235.

It is an arithmetic number, because the mean of its divisors is an integer number (45600235).

Almost surely, 2^91200469 is an apocalyptic number.

It is an amenable number.

91200469 is a deficient number, since it is larger than the sum of its proper divisors (1).

91200469 is an equidigital number, since it uses as much as digits as its factorization.

91200469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 91200469 is about 9549.8936643295. The cubic root of 91200469 is about 450.1241945273.

The spelling of 91200469 in words is "ninety-one million, two hundred thousand, four hundred sixty-nine".