143689049 has 16 divisors (see below), whose sum is σ = 174440448. Its totient is φ = 115540992.

The previous prime is 143689043. The next prime is 143689057. The reversal of 143689049 is 940986341.

It is not a de Polignac number, because 143689049 - 2⁸ = 143688793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143689043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38312 + ... + 41894.

It is an arithmetic number, because the mean of its divisors is an integer number (10902528).

Almost surely, 2^143689049 is an apocalyptic number.

It is an amenable number.

143689049 is a deficient number, since it is larger than the sum of its proper divisors (30751399).

143689049 is a wasteful number, since it uses less digits than its factorization.

143689049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 143689049 is about 11987.0367063758. The cubic root of 143689049 is about 523.7707281760.

The spelling of 143689049 in words is "one hundred forty-three million, six hundred eighty-nine thousand, forty-nine".