40436487139 has 2 divisors, whose sum is σ = 40436487140. Its totient is φ = 40436487138.

The previous prime is 40436487127. The next prime is 40436487163. The reversal of 40436487139 is 93178463404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40436487139 - 2¹¹ = 40436485091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40436487092 and 40436487101.

It is not a weakly prime, because it can be changed into another prime (40436484139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20218243569 + 20218243570.

It is an arithmetic number, because the mean of its divisors is an integer number (20218243570).

Almost surely, 2^40436487139 is an apocalyptic number.

40436487139 is a deficient number, since it is larger than the sum of its proper divisors (1).

40436487139 is an equidigital number, since it uses as much as digits as its factorization.

40436487139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 40436487139 in words is "forty billion, four hundred thirty-six million, four hundred eighty-seven thousand, one hundred thirty-nine".