40438698 has 8 divisors (see below), whose sum is σ = 80877408. Its totient is φ = 13479564.

The previous prime is 40438691. The next prime is 40438703. The reversal of 40438698 is 89683404.

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

40438698 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40438691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369886 + ... + 3369897.

It is an arithmetic number, because the mean of its divisors is an integer number (10109676).

Almost surely, 2^40438698 is an apocalyptic number.

40438698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40438698 is a wasteful number, since it uses less digits than its factorization.

40438698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739788.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 40438698 is about 6359.1428667706. The cubic root of 40438698 is about 343.2409179321.

The spelling of 40438698 in words is "forty million, four hundred thirty-eight thousand, six hundred ninety-eight".