88870869 has 6 divisors (see below), whose sum is σ = 128369046. Its totient is φ = 59247240.

The previous prime is 88870867. The next prime is 88870871. The reversal of 88870869 is 96807888.

It is an interprime number because it is at equal distance from previous prime (88870867) and next prime (88870871).

It can be written as a sum of positive squares in only one way, i.e., 73307844 + 15563025 = 8562^2 + 3945^2 .

It is not a de Polignac number, because 88870869 - 2¹ = 88870867 is a prime.

It is a super-2 number, since 2×88870869² = 15796062713630322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88870867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4937262 + ... + 4937279.

It is an arithmetic number, because the mean of its divisors is an integer number (21394841).

Almost surely, 2^88870869 is an apocalyptic number.

It is an amenable number.

88870869 is a deficient number, since it is larger than the sum of its proper divisors (39498177).

88870869 is a wasteful number, since it uses less digits than its factorization.

88870869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9874547 (or 9874544 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 88870869 is about 9427.1347184603. The cubic root of 88870869 is about 446.2584735815.

The spelling of 88870869 in words is "eighty-eight million, eight hundred seventy thousand, eight hundred sixty-nine".