87438427 has 8 divisors (see below), whose sum is σ = 88615152. Its totient is φ = 86268000.

The previous prime is 87438401. The next prime is 87438431. The reversal of 87438427 is 72483478.

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 87438427 - 2²³ = 79049819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87438467) 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, 30652 + ... + 33382.

It is an arithmetic number, because the mean of its divisors is an integer number (11076894).

Almost surely, 2^87438427 is an apocalyptic number.

87438427 is a deficient number, since it is larger than the sum of its proper divisors (1176725).

87438427 is a wasteful number, since it uses less digits than its factorization.

87438427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149.

The product of its digits is 301056, while the sum is 43.

The square root of 87438427 is about 9350.8516724414. The cubic root of 87438427 is about 443.8478413629.

It can be divided in two parts, 8743842 and 7, that added together give a square (8743849 = 2957²).

The spelling of 87438427 in words is "eighty-seven million, four hundred thirty-eight thousand, four hundred twenty-seven".