88405919 has 16 divisors (see below), whose sum is σ = 103603200. Its totient is φ = 73864224.

The previous prime is 88405909. The next prime is 88405927. The reversal of 88405919 is 91950488.

It is not a de Polignac number, because 88405919 - 2⁴ = 88405903 is a prime.

It is a super-2 number, since 2×88405919² = 15631213028469122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88405919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88405909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124337 + ... + 125045.

It is an arithmetic number, because the mean of its divisors is an integer number (6475200).

Almost surely, 2^88405919 is an apocalyptic number.

88405919 is a deficient number, since it is larger than the sum of its proper divisors (15197281).

88405919 is a wasteful number, since it uses less digits than its factorization.

88405919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 88405919 is about 9402.4421827523. The cubic root of 88405919 is about 445.4788751355.

The spelling of 88405919 in words is "eighty-eight million, four hundred five thousand, nine hundred nineteen".