91969345 has 8 divisors (see below), whose sum is σ = 118852776. Its totient is φ = 67915776.

The previous prime is 91969331. The next prime is 91969349. The reversal of 91969345 is 54396919.

It can be written as a sum of positive squares in 4 ways, for example, as 12278016 + 79691329 = 3504^2 + 8927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91969345 - 2²⁵ = 58414913 is a prime.

It is a super-3 number, since 3×91969345³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91969295 and 91969304.

It is not an unprimeable number, because it can be changed into a prime (91969349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707392 + ... + 707521.

It is an arithmetic number, because the mean of its divisors is an integer number (14856597).

Almost surely, 2^91969345 is an apocalyptic number.

It is an amenable number.

91969345 is a deficient number, since it is larger than the sum of its proper divisors (26883431).

91969345 is a wasteful number, since it uses less digits than its factorization.

91969345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414931.

The product of its digits is 262440, while the sum is 46.

The square root of 91969345 is about 9590.0649111463. The cubic root of 91969345 is about 451.3855975327.

The spelling of 91969345 in words is "ninety-one million, nine hundred sixty-nine thousand, three hundred forty-five".