158343939 has 48 divisors (see below), whose sum is σ = 256838400. Its totient is φ = 93346560.

The previous prime is 158343923. The next prime is 158343947. The reversal of 158343939 is 939343851.

158343939 is a `hidden beast` number, since 1 + 583 + 4 + 39 + 39 = 666.

It is not a de Polignac number, because 158343939 - 2⁴ = 158343923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158343894 and 158343903.

It is not an unprimeable number, because it can be changed into a prime (158344939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 540277 + ... + 540569.

It is an arithmetic number, because the mean of its divisors is an integer number (5350800).

Almost surely, 2^158343939 is an apocalyptic number.

158343939 is a deficient number, since it is larger than the sum of its proper divisors (98494461).

158343939 is a wasteful number, since it uses less digits than its factorization.

158343939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 489 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 158343939 is about 12583.4788115211. The cubic root of 158343939 is about 541.0040066078.

The spelling of 158343939 in words is "one hundred fifty-eight million, three hundred forty-three thousand, nine hundred thirty-nine".