240140398 has 4 divisors (see below), whose sum is σ = 360210600. Its totient is φ = 120070198.

The previous prime is 240140359. The next prime is 240140429. The reversal of 240140398 is 893041042.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60035098 + ... + 60035101.

It is an arithmetic number, because the mean of its divisors is an integer number (90052650).

Almost surely, 2^240140398 is an apocalyptic number.

240140398 is a deficient number, since it is larger than the sum of its proper divisors (120070202).

240140398 is a wasteful number, since it uses less digits than its factorization.

240140398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120070201.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 240140398 is about 15496.4640482918. The cubic root of 240140398 is about 621.5676579101.

The spelling of 240140398 in words is "two hundred forty million, one hundred forty thousand, three hundred ninety-eight".