40179000989 has 2 divisors, whose sum is σ = 40179000990. Its totient is φ = 40179000988.

The previous prime is 40179000977. The next prime is 40179001087. The reversal of 40179000989 is 98900097104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33108713764 + 7070287225 = 181958^2 + 84085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40179000989 is a prime.

It is a super-2 number, since 2×40179000989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40179030989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20089500494 + 20089500495.

It is an arithmetic number, because the mean of its divisors is an integer number (20089500495).

Almost surely, 2^40179000989 is an apocalyptic number.

It is an amenable number.

40179000989 is a deficient number, since it is larger than the sum of its proper divisors (1).

40179000989 is an equidigital number, since it uses as much as digits as its factorization.

40179000989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 40179000989 in words is "forty billion, one hundred seventy-nine million, nine hundred eighty-nine", and thus it is an aban number.