1391948 has 6 divisors (see below), whose sum is σ = 2435916. Its totient is φ = 695972.

The previous prime is 1391941. The next prime is 1391969. The reversal of 1391948 is 8491931.

It is not an unprimeable number, because it can be changed into a prime (1391941) 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 as a sum of consecutive naturals, namely, 173990 + ... + 173997.

It is an arithmetic number, because the mean of its divisors is an integer number (405986).

2^1391948 is an apocalyptic number.

It is an amenable number.

1391948 is a deficient number, since it is larger than the sum of its proper divisors (1043968).

1391948 is a wasteful number, since it uses less digits than its factorization.

1391948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347991 (or 347989 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 1391948 is about 1179.8084590305. The cubic root of 1391948 is about 111.6540130708.

The spelling of 1391948 in words is "one million, three hundred ninety-one thousand, nine hundred forty-eight".