1146639 has 8 divisors (see below), whose sum is σ = 1646512. Its totient is φ = 705600.

The previous prime is 1146581. The next prime is 1146661. The reversal of 1146639 is 9366411.

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

It is not a de Polignac number, because 1146639 - 2⁷ = 1146511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14662 + ... + 14739.

It is an arithmetic number, because the mean of its divisors is an integer number (205814).

2^1146639 is an apocalyptic number.

1146639 is a deficient number, since it is larger than the sum of its proper divisors (499873).

1146639 is a wasteful number, since it uses less digits than its factorization.

1146639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29417.

The product of its digits is 3888, while the sum is 30.

The square root of 1146639 is about 1070.8123084836. The cubic root of 1146639 is about 104.6667895022. Note that the first 3 decimals are identical.

The spelling of 1146639 in words is "one million, one hundred forty-six thousand, six hundred thirty-nine".