88421729 has 8 divisors (see below), whose sum is σ = 100654272. Its totient is φ = 76888240.

The previous prime is 88421713. The next prime is 88421737. The reversal of 88421729 is 92712488.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88421729 - 2⁴ = 88421713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88421779) 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, 174494 + ... + 174999.

It is an arithmetic number, because the mean of its divisors is an integer number (12581784).

Almost surely, 2^88421729 is an apocalyptic number.

It is an amenable number.

88421729 is a deficient number, since it is larger than the sum of its proper divisors (12232543).

88421729 is a wasteful number, since it uses less digits than its factorization.

88421729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349527.

The product of its digits is 64512, while the sum is 41.

The square root of 88421729 is about 9403.2828841847. The cubic root of 88421729 is about 445.5054291690.

The spelling of 88421729 in words is "eighty-eight million, four hundred twenty-one thousand, seven hundred twenty-nine".