87091149 has 8 divisors (see below), whose sum is σ = 116170720. Its totient is φ = 58036176.

The previous prime is 87091129. The next prime is 87091157. The reversal of 87091149 is 94119078.

It is a happy number.

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

It is not a de Polignac number, because 87091149 - 2²⁴ = 70313933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87091129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5007 + ... + 14115.

It is an arithmetic number, because the mean of its divisors is an integer number (14521340).

Almost surely, 2^87091149 is an apocalyptic number.

It is an amenable number.

87091149 is a deficient number, since it is larger than the sum of its proper divisors (29079571).

87091149 is a wasteful number, since it uses less digits than its factorization.

87091149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 87091149 is about 9332.2638732518. The cubic root of 87091149 is about 443.2594535842.

The spelling of 87091149 in words is "eighty-seven million, ninety-one thousand, one hundred forty-nine".