88429821 has 4 divisors (see below), whose sum is σ = 117906432. Its totient is φ = 58953212.

The previous prime is 88429799. The next prime is 88429837. The reversal of 88429821 is 12892488.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88429821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88429841) 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, 14738301 + ... + 14738306.

It is an arithmetic number, because the mean of its divisors is an integer number (29476608).

Almost surely, 2^88429821 is an apocalyptic number.

It is an amenable number.

88429821 is a deficient number, since it is larger than the sum of its proper divisors (29476611).

88429821 is a wasteful number, since it uses less digits than its factorization.

88429821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29476610.

The product of its digits is 73728, while the sum is 42.

The square root of 88429821 is about 9403.7131496021. The cubic root of 88429821 is about 445.5190190411.

The spelling of 88429821 in words is "eighty-eight million, four hundred twenty-nine thousand, eight hundred twenty-one".