40089919 has 16 divisors (see below), whose sum is σ = 43084800. Its totient is φ = 37233504.

The previous prime is 40089911. The next prime is 40089947. The reversal of 40089919 is 91998004.

It is a cyclic number.

It is not a de Polignac number, because 40089919 - 2³ = 40089911 is a prime.

It is a super-2 number, since 2×40089919² = 3214403210853122, 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 (40089911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91102 + ... + 91540.

It is an arithmetic number, because the mean of its divisors is an integer number (2692800).

Almost surely, 2^40089919 is an apocalyptic number.

40089919 is a deficient number, since it is larger than the sum of its proper divisors (2994881).

40089919 is a wasteful number, since it uses less digits than its factorization.

40089919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 40089919 is about 6331.6600508871. The cubic root of 40089919 is about 342.2512630939.

The spelling of 40089919 in words is "forty million, eighty-nine thousand, nine hundred nineteen".