143921479 has 4 divisors (see below), whose sum is σ = 154992376. Its totient is φ = 132850584.

The previous prime is 143921443. The next prime is 143921483. The reversal of 143921479 is 974129341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143921479 - 2¹⁵ = 143888711 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 (143927479) 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, 5535429 + ... + 5535454.

It is an arithmetic number, because the mean of its divisors is an integer number (38748094).

Almost surely, 2^143921479 is an apocalyptic number.

143921479 is a deficient number, since it is larger than the sum of its proper divisors (11070897).

143921479 is a wasteful number, since it uses less digits than its factorization.

143921479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070896.

The product of its digits is 54432, while the sum is 40.

The square root of 143921479 is about 11996.7278455419. The cubic root of 143921479 is about 524.0529915039.

It can be divided in two parts, 143921 and 479, that added together give a square (144400 = 380²).

The spelling of 143921479 in words is "one hundred forty-three million, nine hundred twenty-one thousand, four hundred seventy-nine".