140404401 has 8 divisors (see below), whose sum is σ = 208006560. Its totient is φ = 93602916.

The previous prime is 140404393. The next prime is 140404403. The reversal of 140404401 is 104404041.

140404401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140404401 - 2³ = 140404393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140404403) 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, 2600055 + ... + 2600108.

It is an arithmetic number, because the mean of its divisors is an integer number (26000820).

Almost surely, 2^140404401 is an apocalyptic number.

It is an amenable number.

140404401 is a deficient number, since it is larger than the sum of its proper divisors (67602159).

140404401 is an equidigital number, since it uses as much as digits as its factorization.

140404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200172 (or 5200166 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 140404401 is about 11849.2363045050. The cubic root of 140404401 is about 519.7488938007.

Adding to 140404401 its reverse (104404041), we get a palindrome (244808442).

The spelling of 140404401 in words is "one hundred forty million, four hundred four thousand, four hundred one".