143953997 has 16 divisors (see below), whose sum is σ = 161021952. Its totient is φ = 127572720.

The previous prime is 143953967. The next prime is 143954003. The reversal of 143953997 is 799359341.

It is not a de Polignac number, because 143953997 - 2¹⁰ = 143952973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143953907) 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, 197648 + ... + 198374.

It is an arithmetic number, because the mean of its divisors is an integer number (10063872).

Almost surely, 2^143953997 is an apocalyptic number.

It is an amenable number.

143953997 is a deficient number, since it is larger than the sum of its proper divisors (17067955).

143953997 is a wasteful number, since it uses less digits than its factorization.

143953997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its digits is 918540, while the sum is 50.

The square root of 143953997 is about 11998.0830552218. The cubic root of 143953997 is about 524.0924571718.

The spelling of 143953997 in words is "one hundred forty-three million, nine hundred fifty-three thousand, nine hundred ninety-seven".