40002398 has 8 divisors (see below), whose sum is σ = 60096360. Its totient is φ = 19970280.

The previous prime is 40002379. The next prime is 40002421. The reversal of 40002398 is 89320004.

40002398 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 Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13808 + ... + 16451.

It is an arithmetic number, because the mean of its divisors is an integer number (7512045).

Almost surely, 2^40002398 is an apocalyptic number.

40002398 is a deficient number, since it is larger than the sum of its proper divisors (20093962).

40002398 is a wasteful number, since it uses less digits than its factorization.

40002398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30922.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40002398 is about 6324.7448960413. The cubic root of 40002398 is about 342.0020234026.

The spelling of 40002398 in words is "forty million, two thousand, three hundred ninety-eight".