143949901 has 2 divisors, whose sum is σ = 143949902. Its totient is φ = 143949900.

The previous prime is 143949857. The next prime is 143949913. The reversal of 143949901 is 109949341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115541001 + 28408900 = 10749^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 143949901 - 2⁹ = 143949389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143949991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71974950 + 71974951.

It is an arithmetic number, because the mean of its divisors is an integer number (71974951).

Almost surely, 2^143949901 is an apocalyptic number.

It is an amenable number.

143949901 is a deficient number, since it is larger than the sum of its proper divisors (1).

143949901 is an equidigital number, since it uses as much as digits as its factorization.

143949901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 143949901 is about 11997.9123600733. The cubic root of 143949901 is about 524.0874863638.

The spelling of 143949901 in words is "one hundred forty-three million, nine hundred forty-nine thousand, nine hundred one".