400371149 has 2 divisors, whose sum is σ = 400371150. Its totient is φ = 400371148.

The previous prime is 400371119. The next prime is 400371157. The reversal of 400371149 is 941173004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331895524 + 68475625 = 18218^2 + 8275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400371149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400371119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200185574 + 200185575.

It is an arithmetic number, because the mean of its divisors is an integer number (200185575).

Almost surely, 2^400371149 is an apocalyptic number.

It is an amenable number.

400371149 is a deficient number, since it is larger than the sum of its proper divisors (1).

400371149 is an equidigital number, since it uses as much as digits as its factorization.

400371149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 400371149 is about 20009.2765736295. The cubic root of 400371149 is about 737.0341167153.

The spelling of 400371149 in words is "four hundred million, three hundred seventy-one thousand, one hundred forty-nine".