88419989 has 4 divisors (see below), whose sum is σ = 101051424. Its totient is φ = 75788556.

The previous prime is 88419979. The next prime is 88420051. The reversal of 88419989 is 98991488.

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-88419989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88419959) 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 3 ways as a sum of consecutive naturals, for example, 6315707 + ... + 6315720.

It is an arithmetic number, because the mean of its divisors is an integer number (25262856).

Almost surely, 2^88419989 is an apocalyptic number.

It is an amenable number.

88419989 is a deficient number, since it is larger than the sum of its proper divisors (12631435).

88419989 is a wasteful number, since it uses less digits than its factorization.

88419989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12631434.

The product of its digits is 1492992, while the sum is 56.

The square root of 88419989 is about 9403.1903628503. The cubic root of 88419989 is about 445.5025068687.

The spelling of 88419989 in words is "eighty-eight million, four hundred nineteen thousand, nine hundred eighty-nine".