140440455 has 12 divisors (see below), whose sum is σ = 243430200. Its totient is φ = 74901552.

The previous prime is 140440453. The next prime is 140440459. The reversal of 140440455 is 554044041.

It is not a de Polignac number, because 140440455 - 2¹ = 140440453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140440453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1560405 + ... + 1560494.

It is an arithmetic number, because the mean of its divisors is an integer number (20285850).

Almost surely, 2^140440455 is an apocalyptic number.

140440455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140440455 is a deficient number, since it is larger than the sum of its proper divisors (102989745).

140440455 is a wasteful number, since it uses less digits than its factorization.

140440455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120910 (or 3120907 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 140440455 is about 11850.7575707210. The cubic root of 140440455 is about 519.7933782155.

Adding to 140440455 its reverse (554044041), we get a palindrome (694484496).

The spelling of 140440455 in words is "one hundred forty million, four hundred forty thousand, four hundred fifty-five".