40069899 has 6 divisors (see below), whose sum is σ = 57878756. Its totient is φ = 26713260.

The previous prime is 40069889. The next prime is 40069921. The reversal of 40069899 is 99896004.

40069899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40069899 - 2¹¹ = 40067851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40069829) 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 5 ways as a sum of consecutive naturals, for example, 2226097 + ... + 2226114.

Almost surely, 2^40069899 is an apocalyptic number.

40069899 is a deficient number, since it is larger than the sum of its proper divisors (17808857).

40069899 is a wasteful number, since it uses less digits than its factorization.

40069899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452217 (or 4452214 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 40069899 is about 6330.0789094608. The cubic root of 40069899 is about 342.1942827579.

The spelling of 40069899 in words is "forty million, sixty-nine thousand, eight hundred ninety-nine".