78091141 has 8 divisors (see below), whose sum is σ = 81699264. Its totient is φ = 74500800.

The previous prime is 78091103. The next prime is 78091147. The reversal of 78091141 is 14119087.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78091141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78091147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4990 + ... + 13456.

It is an arithmetic number, because the mean of its divisors is an integer number (10212408).

Almost surely, 2^78091141 is an apocalyptic number.

It is an amenable number.

78091141 is a deficient number, since it is larger than the sum of its proper divisors (3608123).

78091141 is a wasteful number, since it uses less digits than its factorization.

78091141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 78091141 is about 8836.9192029802. The cubic root of 78091141 is about 427.4322197979.

The spelling of 78091141 in words is "seventy-eight million, ninety-one thousand, one hundred forty-one".