40402340441 has 4 divisors (see below), whose sum is σ = 40432972800. Its totient is φ = 40371708084.

The previous prime is 40402340413. The next prime is 40402340443. The reversal of 40402340441 is 14404320404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40402340441 - 2²² = 40398146137 is a prime.

It is a super-2 number, since 2×40402340441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40402340441.

It is not an unprimeable number, because it can be changed into a prime (40402340443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15314201 + ... + 15316838.

It is an arithmetic number, because the mean of its divisors is an integer number (10108243200).

Almost surely, 2^40402340441 is an apocalyptic number.

It is an amenable number.

40402340441 is a deficient number, since it is larger than the sum of its proper divisors (30632359).

40402340441 is a wasteful number, since it uses less digits than its factorization.

40402340441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30632358.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 40402340441 its reverse (14404320404), we get a palindrome (54806660845).

The spelling of 40402340441 in words is "forty billion, four hundred two million, three hundred forty thousand, four hundred forty-one".