91969442 has 8 divisors (see below), whose sum is σ = 138648000. Its totient is φ = 45753444.

The previous prime is 91969441. The next prime is 91969453. The reversal of 91969442 is 24496919.

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

It is a super-3 number, since 3×91969442³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91969393 and 91969402.

It is not an unprimeable number, because it can be changed into a prime (91969441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115142 + ... + 115937.

It is an arithmetic number, because the mean of its divisors is an integer number (17331000).

Almost surely, 2^91969442 is an apocalyptic number.

91969442 is a deficient number, since it is larger than the sum of its proper divisors (46678558).

91969442 is a wasteful number, since it uses less digits than its factorization.

91969442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231280.

The product of its digits is 139968, while the sum is 44.

The square root of 91969442 is about 9590.0699684622. The cubic root of 91969442 is about 451.3857562247.

The spelling of 91969442 in words is "ninety-one million, nine hundred sixty-nine thousand, four hundred forty-two".