91049642 has 8 divisors (see below), whose sum is σ = 136615332. Its totient is φ = 45511200.

The previous prime is 91049627. The next prime is 91049659. The reversal of 91049642 is 24694019.

It can be written as a sum of positive squares in 2 ways, for example, as 90992521 + 57121 = 9539^2 + 239^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7892 + ... + 15632.

Almost surely, 2^91049642 is an apocalyptic number.

91049642 is a deficient number, since it is larger than the sum of its proper divisors (45565690).

91049642 is a wasteful number, since it uses less digits than its factorization.

91049642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13624.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 91049642 is about 9541.9936072081. The cubic root of 91049642 is about 449.8759196995.

The spelling of 91049642 in words is "ninety-one million, forty-nine thousand, six hundred forty-two".