87044147 has 4 divisors (see below), whose sum is σ = 87341520. Its totient is φ = 86746776.

The previous prime is 87044143. The next prime is 87044173. The reversal of 87044147 is 74144078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87044147 - 2² = 87044143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87044143) 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, 148247 + ... + 148832.

It is an arithmetic number, because the mean of its divisors is an integer number (21835380).

Almost surely, 2^87044147 is an apocalyptic number.

87044147 is a deficient number, since it is larger than the sum of its proper divisors (297373).

87044147 is a wasteful number, since it uses less digits than its factorization.

87044147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297372.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 87044147 is about 9329.7452805529. The cubic root of 87044147 is about 443.1796987137.

The spelling of 87044147 in words is "eighty-seven million, forty-four thousand, one hundred forty-seven".