1391938 has 8 divisors (see below), whose sum is σ = 2095632. Its totient is φ = 693396.

The previous prime is 1391933. The next prime is 1391941. The reversal of 1391938 is 8391931.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1391933) 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, 520 + ... + 1747.

It is an arithmetic number, because the mean of its divisors is an integer number (261954).

2^1391938 is an apocalyptic number.

1391938 is a deficient number, since it is larger than the sum of its proper divisors (703694).

1391938 is a wasteful number, since it uses less digits than its factorization.

1391938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576.

The product of its digits is 5832, while the sum is 34.

The square root of 1391938 is about 1179.8042210469. The cubic root of 1391938 is about 111.6537456894.

The spelling of 1391938 in words is "one million, three hundred ninety-one thousand, nine hundred thirty-eight".