88440919 has 16 divisors (see below), whose sum is σ = 107984448. Its totient is φ = 70705152.

The previous prime is 88440889. The next prime is 88440959. The reversal of 88440919 is 91904488.

It is not a de Polignac number, because 88440919 - 2¹¹ = 88438871 is a prime.

It is a super-2 number, since 2×88440919² = 15643592307129122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88440959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10159 + ... + 16735.

It is an arithmetic number, because the mean of its divisors is an integer number (6749028).

Almost surely, 2^88440919 is an apocalyptic number.

88440919 is a deficient number, since it is larger than the sum of its proper divisors (19543529).

88440919 is a wasteful number, since it uses less digits than its factorization.

88440919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 88440919 is about 9404.3032171448. The cubic root of 88440919 is about 445.5376559036.

The spelling of 88440919 in words is "eighty-eight million, four hundred forty thousand, nine hundred nineteen".