1391048 has 16 divisors (see below), whose sum is σ = 2672460. Its totient is φ = 678400.

The previous prime is 1391041. The next prime is 1391051. The reversal of 1391048 is 8401931.

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 3364 = 1178^2 + 58^2 .

It is not an unprimeable number, because it can be changed into a prime (1391041) 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, 1793 + ... + 2448.

2^1391048 is an apocalyptic number.

It is an amenable number.

1391048 is a deficient number, since it is larger than the sum of its proper divisors (1281412).

1391048 is a wasteful number, since it uses less digits than its factorization.

1391048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288 (or 4284 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1391048 is about 1179.4269795117. The cubic root of 1391048 is about 111.6299436186.

Adding to 1391048 its reverse (8401931), we get a palindrome (9792979).

The spelling of 1391048 in words is "one million, three hundred ninety-one thousand, forty-eight".