40976273209 has 2 divisors, whose sum is σ = 40976273210. Its totient is φ = 40976273208.

The previous prime is 40976273207. The next prime is 40976273227. The reversal of 40976273209 is 90237267904.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39587071225 + 1389201984 = 198965^2 + 37272^2 .

It is a cyclic number.

It is not a de Polignac number, because 40976273209 - 2¹ = 40976273207 is a prime.

It is a super-2 number, since 2×40976273209² (a number of 22 digits) contains 22 as substring.

Together with 40976273207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40976273207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20488136604 + 20488136605.

It is an arithmetic number, because the mean of its divisors is an integer number (20488136605).

Almost surely, 2^40976273209 is an apocalyptic number.

It is an amenable number.

40976273209 is a deficient number, since it is larger than the sum of its proper divisors (1).

40976273209 is an equidigital number, since it uses as much as digits as its factorization.

40976273209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 40976273209 in words is "forty billion, nine hundred seventy-six million, two hundred seventy-three thousand, two hundred nine".