400442440245 has 8 divisors (see below), whose sum is σ = 640707904416. Its totient is φ = 213569301456.

The previous prime is 400442440241. The next prime is 400442440303. The reversal of 400442440245 is 542044244004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400442440245 - 2² = 400442440241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400442440241) 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, 13348081327 + ... + 13348081356.

It is an arithmetic number, because the mean of its divisors is an integer number (80088488052).

Almost surely, 2^400442440245 is an apocalyptic number.

It is an amenable number.

400442440245 is a deficient number, since it is larger than the sum of its proper divisors (240265464171).

400442440245 is a wasteful number, since it uses less digits than its factorization.

400442440245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26696162691.

The product of its (nonzero) digits is 81920, while the sum is 33.

Adding to 400442440245 its reverse (542044244004), we get a palindrome (942486684249).

The spelling of 400442440245 in words is "four hundred billion, four hundred forty-two million, four hundred forty thousand, two hundred forty-five".