1348639 has 4 divisors (see below), whose sum is σ = 1419640. Its totient is φ = 1277640.

The previous prime is 1348637. The next prime is 1348673. The reversal of 1348639 is 9368431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9368431 = 821 ⋅11411.

It is a cyclic number.

It is not a de Polignac number, because 1348639 - 2¹ = 1348637 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 (1348637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35472 + ... + 35509.

It is an arithmetic number, because the mean of its divisors is an integer number (354910).

2^1348639 is an apocalyptic number.

1348639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1348639 is a deficient number, since it is larger than the sum of its proper divisors (71001).

1348639 is an equidigital number, since it uses as much as digits as its factorization.

1348639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71000.

The product of its digits is 15552, while the sum is 34.

The square root of 1348639 is about 1161.3091750262. The cubic root of 1348639 is about 110.4837919758.

The spelling of 1348639 in words is "one million, three hundred forty-eight thousand, six hundred thirty-nine".