140404455 has 32 divisors (see below), whose sum is σ = 256363200. Its totient is φ = 72855936.

The previous prime is 140404447. The next prime is 140404499. The reversal of 140404455 is 554404041.

It is not a de Polignac number, because 140404455 - 2³ = 140404447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9060 + ... + 19049.

It is an arithmetic number, because the mean of its divisors is an integer number (8011350).

Almost surely, 2^140404455 is an apocalyptic number.

140404455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140404455 is a deficient number, since it is larger than the sum of its proper divisors (115958745).

140404455 is a wasteful number, since it uses less digits than its factorization.

140404455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28160 (or 28154 counting only the distinct ones).

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

The square root of 140404455 is about 11849.2385831327. The cubic root of 140404455 is about 519.7489604330.

Adding to 140404455 its reverse (554404041), we get a palindrome (694808496).

The spelling of 140404455 in words is "one hundred forty million, four hundred four thousand, four hundred fifty-five".