40926769409 has 4 divisors (see below), whose sum is σ = 41023983060. Its totient is φ = 40829555760.

The previous prime is 40926769379. The next prime is 40926769423. The reversal of 40926769409 is 90496762904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3649972225 + 37276797184 = 60415^2 + 193072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40926769409 is a prime.

It is a super-3 number, since 3×40926769409³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40926769469) 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, 48606194 + ... + 48607035.

It is an arithmetic number, because the mean of its divisors is an integer number (10255995765).

Almost surely, 2^40926769409 is an apocalyptic number.

It is an amenable number.

40926769409 is a deficient number, since it is larger than the sum of its proper divisors (97213651).

40926769409 is an equidigital number, since it uses as much as digits as its factorization.

40926769409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97213650.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 40926769409 in words is "forty billion, nine hundred twenty-six million, seven hundred sixty-nine thousand, four hundred nine".