1000149 has 4 divisors (see below), whose sum is σ = 1333536. Its totient is φ = 666764.

The previous prime is 1000133. The next prime is 1000151. The reversal of 1000149 is 9410001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9410001 = 3 ⋅3136667.

It is a cyclic number.

It is not a de Polignac number, because 1000149 - 2⁴ = 1000133 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166689 + ... + 166694.

It is an arithmetic number, because the mean of its divisors is an integer number (333384).

2^1000149 is an apocalyptic number.

It is an amenable number.

1000149 is a deficient number, since it is larger than the sum of its proper divisors (333387).

1000149 is an equidigital number, since it uses as much as digits as its factorization.

1000149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333386.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1000149 is about 1000.0744972251. The cubic root of 1000149 is about 100.0049664200.

The spelling of 1000149 in words is "one million, one hundred forty-nine", and thus it is an aban number.