40000040401 has 8 divisors (see below), whose sum is σ = 43497659880. Its totient is φ = 36629607168.

The previous prime is 40000040389. The next prime is 40000040411. The reversal of 40000040401 is 10404000004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18566787600 + 21433252801 = 136260^2 + 146401^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40000040401 - 2³³ = 31410105809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40000040411) 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, 31795906 + ... + 31797163.

It is an arithmetic number, because the mean of its divisors is an integer number (5437207485).

Almost surely, 2^40000040401 is an apocalyptic number.

It is an amenable number.

40000040401 is a deficient number, since it is larger than the sum of its proper divisors (3497619479).

40000040401 is a wasteful number, since it uses less digits than its factorization.

40000040401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63593123.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 40000040401 its reverse (10404000004), we get a palindrome (50404040405).

The spelling of 40000040401 in words is "forty billion, forty thousand, four hundred one".