40438699 has 8 divisors (see below), whose sum is σ = 48934368. Its totient is φ = 32622720.

The previous prime is 40438691. The next prime is 40438703. The reversal of 40438699 is 99683404.

40438699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40438699 - 2³ = 40438691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40438691) 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 7 ways as a sum of consecutive naturals, for example, 169792 + ... + 170029.

It is an arithmetic number, because the mean of its divisors is an integer number (6116796).

Almost surely, 2^40438699 is an apocalyptic number.

40438699 is a deficient number, since it is larger than the sum of its proper divisors (8495669).

40438699 is a wasteful number, since it uses less digits than its factorization.

40438699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339845.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 40438699 is about 6359.1429453976. The cubic root of 40438699 is about 343.2409207614.

The spelling of 40438699 in words is "forty million, four hundred thirty-eight thousand, six hundred ninety-nine".