40005000149 has 2 divisors, whose sum is σ = 40005000150. Its totient is φ = 40005000148.

The previous prime is 40005000143. The next prime is 40005000181. The reversal of 40005000149 is 94100050004.

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., 28054575025 + 11950425124 = 167495^2 + 109318^2 .

It is a cyclic number.

It is not a de Polignac number, because 40005000149 - 2²⁰ = 40003951573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40005000143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002500074 + 20002500075.

It is an arithmetic number, because the mean of its divisors is an integer number (20002500075).

Almost surely, 2^40005000149 is an apocalyptic number.

It is an amenable number.

40005000149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40005000149 is an equidigital number, since it uses as much as digits as its factorization.

40005000149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 40005000149 in words is "forty billion, five million, one hundred forty-nine", and thus it is an aban number.