1391748 has 12 divisors (see below), whose sum is σ = 3247440. Its totient is φ = 463912.

The previous prime is 1391729. The next prime is 1391779. The reversal of 1391748 is 8471931.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57978 + ... + 58001.

It is an arithmetic number, because the mean of its divisors is an integer number (270620).

2^1391748 is an apocalyptic number.

It is an amenable number.

1391748 is an abundant number, since it is smaller than the sum of its proper divisors (1855692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391748 is a wasteful number, since it uses less digits than its factorization.

1391748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115986 (or 115984 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 1391748 is about 1179.7236964646. The cubic root of 1391748 is about 111.6486652005.

The spelling of 1391748 in words is "one million, three hundred ninety-one thousand, seven hundred forty-eight".