240403390 has 16 divisors (see below), whose sum is σ = 455501520. Its totient is φ = 91100160.

The previous prime is 240403369. The next prime is 240403391. The reversal of 240403390 is 93304042.

240403390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240403391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632451 + ... + 632830.

It is an arithmetic number, because the mean of its divisors is an integer number (28468845).

Almost surely, 2^240403390 is an apocalyptic number.

240403390 is a deficient number, since it is larger than the sum of its proper divisors (215098130).

240403390 is a wasteful number, since it uses less digits than its factorization.

240403390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265307.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 240403390 is about 15504.9472749829. The cubic root of 240403390 is about 621.7944803369.

The spelling of 240403390 in words is "two hundred forty million, four hundred three thousand, three hundred ninety".