143956979 has 4 divisors (see below), whose sum is σ = 144067440. Its totient is φ = 143846520.

The previous prime is 143956961. The next prime is 143956987. The reversal of 143956979 is 979659341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979659341 = 25247 ⋅38803.

It is a cyclic number.

It is not a de Polignac number, because 143956979 - 2¹⁶ = 143891443 is a prime.

It is a super-2 number, since 2×143956979² = 41447223605612882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143956979.

It is not an unprimeable number, because it can be changed into a prime (143956909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53252 + ... + 55889.

It is an arithmetic number, because the mean of its divisors is an integer number (36016860).

Almost surely, 2^143956979 is an apocalyptic number.

143956979 is a deficient number, since it is larger than the sum of its proper divisors (110461).

143956979 is a wasteful number, since it uses less digits than its factorization.

143956979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110460.

The product of its digits is 1837080, while the sum is 53.

The square root of 143956979 is about 11998.2073244298. The cubic root of 143956979 is about 524.0960759967.

The spelling of 143956979 in words is "one hundred forty-three million, nine hundred fifty-six thousand, nine hundred seventy-nine".