157929443 has 4 divisors (see below), whose sum is σ = 180490800. Its totient is φ = 135368088.

The previous prime is 157929433. The next prime is 157929449. The reversal of 157929443 is 344929751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344929751 = 139 ⋅2481509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157929443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157929394 and 157929403.

It is not an unprimeable number, because it can be changed into a prime (157929449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11280668 + ... + 11280681.

It is an arithmetic number, because the mean of its divisors is an integer number (45122700).

Almost surely, 2^157929443 is an apocalyptic number.

157929443 is a deficient number, since it is larger than the sum of its proper divisors (22561357).

157929443 is an equidigital number, since it uses as much as digits as its factorization.

157929443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22561356.

The product of its digits is 272160, while the sum is 44.

The square root of 157929443 is about 12566.9981698097. The cubic root of 157929443 is about 540.5315330994.

The spelling of 157929443 in words is "one hundred fifty-seven million, nine hundred twenty-nine thousand, four hundred forty-three".