88887421 has 10 divisors (see below), whose sum is σ = 103698622. Its totient is φ = 76187160.

The previous prime is 88887419. The next prime is 88887437. The reversal of 88887421 is 12478888.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57684025 + 31203396 = 7595^2 + 5586^2 .

It is not a de Polignac number, because 88887421 - 2¹ = 88887419 is a prime.

It is a super-2 number, since 2×88887421² = 15801947224062482, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88887401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16110 + ... + 20911.

Almost surely, 2^88887421 is an apocalyptic number.

It is an amenable number.

88887421 is a deficient number, since it is larger than the sum of its proper divisors (14811201).

88887421 is an frugal number, since it uses more digits than its factorization.

88887421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37049 (or 37028 counting only the distinct ones).

The product of its digits is 229376, while the sum is 46.

The square root of 88887421 is about 9428.0125689352. The cubic root of 88887421 is about 446.2861767416.

The spelling of 88887421 in words is "eighty-eight million, eight hundred eighty-seven thousand, four hundred twenty-one".