1445139 has 12 divisors (see below), whose sum is σ = 2100072. Its totient is φ = 957600.

The previous prime is 1445137. The next prime is 1445149. The reversal of 1445139 is 9315441.

1445139 is a `hidden beast` number, since 144 + 513 + 9 = 666.

It is not a de Polignac number, because 1445139 - 2¹ = 1445137 is a prime.

1445139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1445137) 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, 1519 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (175006).

2^1445139 is an apocalyptic number.

1445139 is a deficient number, since it is larger than the sum of its proper divisors (654933).

1445139 is a wasteful number, since it uses less digits than its factorization.

1445139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 975 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1445139 is about 1202.1393430048. The cubic root of 1445139 is about 113.0584968747.

The spelling of 1445139 in words is "one million, four hundred forty-five thousand, one hundred thirty-nine".