40864600729 has 2 divisors, whose sum is σ = 40864600730. Its totient is φ = 40864600728.

The previous prime is 40864600649. The next prime is 40864600769. The reversal of 40864600729 is 92700646804.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38681842329 + 2182758400 = 196677^2 + 46720^2 .

It is a cyclic number.

It is not a de Polignac number, because 40864600729 - 2²⁵ = 40831046297 is a prime.

It is not a weakly prime, because it can be changed into another prime (40864600769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20432300364 + 20432300365.

It is an arithmetic number, because the mean of its divisors is an integer number (20432300365).

Almost surely, 2^40864600729 is an apocalyptic number.

It is an amenable number.

40864600729 is a deficient number, since it is larger than the sum of its proper divisors (1).

40864600729 is an equidigital number, since it uses as much as digits as its factorization.

40864600729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 40864600729 in words is "forty billion, eight hundred sixty-four million, six hundred thousand, seven hundred twenty-nine".