1391137 has 6 divisors (see below), whose sum is σ = 1529234. Its totient is φ = 1264560.

The previous prime is 1391129. The next prime is 1391183. The reversal of 1391137 is 7311931.

It can be written as a sum of positive squares in only one way, i.e., 1234321 + 156816 = 1111^2 + 396^2 .

It is not a de Polignac number, because 1391137 - 2³ = 1391129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1394137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5628 + ... + 5869.

2^1391137 is an apocalyptic number.

It is an amenable number.

1391137 is a deficient number, since it is larger than the sum of its proper divisors (138097).

1391137 is a wasteful number, since it uses less digits than its factorization.

1391137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11519 (or 11508 counting only the distinct ones).

The product of its digits is 567, while the sum is 25.

The square root of 1391137 is about 1179.4647090948. The cubic root of 1391137 is about 111.6323242825.

The spelling of 1391137 in words is "one million, three hundred ninety-one thousand, one hundred thirty-seven".