145558939 has 8 divisors (see below), whose sum is σ = 147132128. Its totient is φ = 143994240.

The previous prime is 145558937. The next prime is 145558961. The reversal of 145558939 is 939855541.

145558939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145558939 - 2¹ = 145558937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145558892 and 145558901.

It is not an unprimeable number, because it can be changed into a prime (145558937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35914 + ... + 39760.

It is an arithmetic number, because the mean of its divisors is an integer number (18391516).

Almost surely, 2^145558939 is an apocalyptic number.

145558939 is a deficient number, since it is larger than the sum of its proper divisors (1573189).

145558939 is a wasteful number, since it uses less digits than its factorization.

145558939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245.

The product of its digits is 972000, while the sum is 49.

The square root of 145558939 is about 12064.7809346047. The cubic root of 145558939 is about 526.0329642919.

The spelling of 145558939 in words is "one hundred forty-five million, five hundred fifty-eight thousand, nine hundred thirty-nine".