211400149 has 2 divisors, whose sum is σ = 211400150. Its totient is φ = 211400148.

The previous prime is 211400131. The next prime is 211400173. The reversal of 211400149 is 941004112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206841924 + 4558225 = 14382^2 + 2135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211400149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211403149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105700074 + 105700075.

It is an arithmetic number, because the mean of its divisors is an integer number (105700075).

Almost surely, 2^211400149 is an apocalyptic number.

It is an amenable number.

211400149 is a deficient number, since it is larger than the sum of its proper divisors (1).

211400149 is an equidigital number, since it uses as much as digits as its factorization.

211400149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 211400149 is about 14539.6062188768. The cubic root of 211400149 is about 595.7102823317.

The spelling of 211400149 in words is "two hundred eleven million, four hundred thousand, one hundred forty-nine".