88387289 has 4 divisors (see below), whose sum is σ = 88475556. Its totient is φ = 88299024.

The previous prime is 88387283. The next prime is 88387303. The reversal of 88387289 is 98278388.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4481689 + 83905600 = 2117^2 + 9160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88387289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 88387289.

It is not an unprimeable number, because it can be changed into a prime (88387283) 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, 42614 + ... + 44639.

It is an arithmetic number, because the mean of its divisors is an integer number (22118889).

Almost surely, 2^88387289 is an apocalyptic number.

It is an amenable number.

88387289 is a deficient number, since it is larger than the sum of its proper divisors (88267).

88387289 is a wasteful number, since it uses less digits than its factorization.

88387289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88266.

The product of its digits is 1548288, while the sum is 53.

The square root of 88387289 is about 9401.4514304973. The cubic root of 88387289 is about 445.4475806453.

The spelling of 88387289 in words is "eighty-eight million, three hundred eighty-seven thousand, two hundred eighty-nine".