91289542 has 8 divisors (see below), whose sum is σ = 138584376. Its totient is φ = 45094752.

The previous prime is 91289533. The next prime is 91289543. The reversal of 91289542 is 24598219.

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

It is a junction number, because it is equal to n+sod(n) for n = 91289495 and 91289504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91289543) 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, 274803 + ... + 275134.

It is an arithmetic number, because the mean of its divisors is an integer number (17323047).

Almost surely, 2^91289542 is an apocalyptic number.

91289542 is a deficient number, since it is larger than the sum of its proper divisors (47294834).

91289542 is a wasteful number, since it uses less digits than its factorization.

91289542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550022.

The product of its digits is 51840, while the sum is 40.

The square root of 91289542 is about 9554.5560859728. The cubic root of 91289542 is about 450.2706881693.

The spelling of 91289542 in words is "ninety-one million, two hundred eighty-nine thousand, five hundred forty-two".