87889329 has 24 divisors (see below), whose sum is σ = 139025952. Its totient is φ = 53061120.

The previous prime is 87889301. The next prime is 87889331. The reversal of 87889329 is 92398878.

It is not a de Polignac number, because 87889329 - 2¹² = 87885233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87889339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26449 + ... + 29585.

It is an arithmetic number, because the mean of its divisors is an integer number (5792748).

Almost surely, 2^87889329 is an apocalyptic number.

It is an amenable number.

87889329 is a deficient number, since it is larger than the sum of its proper divisors (51136623).

87889329 is a wasteful number, since it uses less digits than its factorization.

87889329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437 (or 3434 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 87889329 is about 9374.9308797452. The cubic root of 87889329 is about 444.6094776953.

The spelling of 87889329 in words is "eighty-seven million, eight hundred eighty-nine thousand, three hundred twenty-nine".