140405446 has 16 divisors (see below), whose sum is σ = 212423904. Its totient is φ = 69600384.

The previous prime is 140405423. The next prime is 140405467. The reversal of 140405446 is 644504041.

140405446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170191 + ... + 171013.

It is an arithmetic number, because the mean of its divisors is an integer number (13276494).

Almost surely, 2^140405446 is an apocalyptic number.

140405446 is a deficient number, since it is larger than the sum of its proper divisors (72018458).

140405446 is a wasteful number, since it uses less digits than its factorization.

140405446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 140405446 is about 11849.2804000918. The cubic root of 140405446 is about 519.7501832575.

Adding to 140405446 its reverse (644504041), we get a palindrome (784909487).

The spelling of 140405446 in words is "one hundred forty million, four hundred five thousand, four hundred forty-six".