158979447 has 12 divisors (see below), whose sum is σ = 250513224. Its totient is φ = 96351120.

The previous prime is 158979407. The next prime is 158979449. The reversal of 158979447 is 744979851.

It is not a de Polignac number, because 158979447 - 2¹⁰ = 158978423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158979393 and 158979402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158979449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802828 + ... + 803025.

It is an arithmetic number, because the mean of its divisors is an integer number (20876102).

Almost surely, 2^158979447 is an apocalyptic number.

158979447 is a deficient number, since it is larger than the sum of its proper divisors (91533777).

158979447 is a wasteful number, since it uses less digits than its factorization.

158979447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605870 (or 1605867 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 158979447 is about 12608.7052071178. The cubic root of 158979447 is about 541.7268075341.

The spelling of 158979447 in words is "one hundred fifty-eight million, nine hundred seventy-nine thousand, four hundred forty-seven".