87427447 has 8 divisors (see below), whose sum is σ = 92757312. Its totient is φ = 82118400.

The previous prime is 87427427. The next prime is 87427451. The reversal of 87427447 is 74472478.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87427447 - 2¹¹ = 87425399 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 (87427427) 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, 3922 + ... + 13792.

It is an arithmetic number, because the mean of its divisors is an integer number (11594664).

Almost surely, 2^87427447 is an apocalyptic number.

87427447 is a deficient number, since it is larger than the sum of its proper divisors (5329865).

87427447 is a wasteful number, since it uses less digits than its factorization.

87427447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409.

The product of its digits is 351232, while the sum is 43.

The square root of 87427447 is about 9350.2645417122. The cubic root of 87427447 is about 443.8292619904.

The spelling of 87427447 in words is "eighty-seven million, four hundred twenty-seven thousand, four hundred forty-seven".