405140149 has 2 divisors, whose sum is σ = 405140150. Its totient is φ = 405140148.

The previous prime is 405140123. The next prime is 405140161. The reversal of 405140149 is 941041504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296459524 + 108680625 = 17218^2 + 10425^2 .

It is a cyclic number.

It is not a de Polignac number, because 405140149 - 2¹³ = 405131957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405140119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202570074 + 202570075.

It is an arithmetic number, because the mean of its divisors is an integer number (202570075).

Almost surely, 2^405140149 is an apocalyptic number.

It is an amenable number.

405140149 is a deficient number, since it is larger than the sum of its proper divisors (1).

405140149 is an equidigital number, since it uses as much as digits as its factorization.

405140149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 405140149 is about 20128.0935262136. The cubic root of 405140149 is about 739.9489549645.

The spelling of 405140149 in words is "four hundred five million, one hundred forty thousand, one hundred forty-nine".