1148409 has 6 divisors (see below), whose sum is σ = 1658826. Its totient is φ = 765600.

The previous prime is 1148387. The next prime is 1148437. The reversal of 1148409 is 9048411.

It can be written as a sum of positive squares in only one way, i.e., 1010025 + 138384 = 1005^2 + 372^2 .

It is not a de Polignac number, because 1148409 - 2⁵ = 1148377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1148489) 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 5 ways as a sum of consecutive naturals, for example, 63792 + ... + 63809.

It is an arithmetic number, because the mean of its divisors is an integer number (276471).

2^1148409 is an apocalyptic number.

It is an amenable number.

1148409 is a deficient number, since it is larger than the sum of its proper divisors (510417).

1148409 is a wasteful number, since it uses less digits than its factorization.

1148409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127607 (or 127604 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1148409 is about 1071.6384651551. The cubic root of 1148409 is about 104.7206178283.

The spelling of 1148409 in words is "one million, one hundred forty-eight thousand, four hundred nine".