158444387 has 2 divisors, whose sum is σ = 158444388. Its totient is φ = 158444386.

The previous prime is 158444357. The next prime is 158444449. The reversal of 158444387 is 783444851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158444387 - 2¹⁴ = 158428003 is a prime.

It is not a weakly prime, because it can be changed into another prime (158444357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79222193 + 79222194.

It is an arithmetic number, because the mean of its divisors is an integer number (79222194).

Almost surely, 2^158444387 is an apocalyptic number.

158444387 is a deficient number, since it is larger than the sum of its proper divisors (1).

158444387 is an equidigital number, since it uses as much as digits as its factorization.

158444387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 44.

The square root of 158444387 is about 12587.4694438557. The cubic root of 158444387 is about 541.1183805960.

The spelling of 158444387 in words is "one hundred fifty-eight million, four hundred forty-four thousand, three hundred eighty-seven".