40929863209 has 8 divisors (see below), whose sum is σ = 41018122152. Its totient is φ = 40841687040.

The previous prime is 40929863207. The next prime is 40929863243. The reversal of 40929863209 is 90236892904.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 104448400 + 40825414809 = 10220^2 + 202053^2 .

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 40929863209 - 2¹ = 40929863207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40929863201) 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, 1025589 + ... + 1064749.

It is an arithmetic number, because the mean of its divisors is an integer number (5127265269).

Almost surely, 2^40929863209 is an apocalyptic number.

It is an amenable number.

40929863209 is a deficient number, since it is larger than the sum of its proper divisors (88258943).

40929863209 is a wasteful number, since it uses less digits than its factorization.

40929863209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41387.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 40929863209 in words is "forty billion, nine hundred twenty-nine million, eight hundred sixty-three thousand, two hundred nine".