93991442 has 32 divisors (see below), whose sum is σ = 155435520. Its totient is φ = 42456960.

The previous prime is 93991439. The next prime is 93991459. The reversal of 93991442 is 24419939.

It is a self number, because there is not a number n which added to its sum of digits gives 93991442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85448 + ... + 86540.

It is an arithmetic number, because the mean of its divisors is an integer number (4857360).

Almost surely, 2^93991442 is an apocalyptic number.

93991442 is a deficient number, since it is larger than the sum of its proper divisors (61444078).

93991442 is a wasteful number, since it uses less digits than its factorization.

93991442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218.

The product of its digits is 69984, while the sum is 41.

The square root of 93991442 is about 9694.9183596356. The cubic root of 93991442 is about 454.6697954404.

The spelling of 93991442 in words is "ninety-three million, nine hundred ninety-one thousand, four hundred forty-two".