1391092 has 6 divisors (see below), whose sum is σ = 2434418. Its totient is φ = 695544.

The previous prime is 1391087. The next prime is 1391113. The reversal of 1391092 is 2901931.

It can be written as a sum of positive squares in only one way, i.e., 1336336 + 54756 = 1156^2 + 234^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173883 + ... + 173890.

2^1391092 is an apocalyptic number.

It is an amenable number.

1391092 is a deficient number, since it is larger than the sum of its proper divisors (1043326).

1391092 is a wasteful number, since it uses less digits than its factorization.

1391092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347777 (or 347775 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1391092 is about 1179.4456324901. The cubic root of 1391092 is about 111.6311205887.

The spelling of 1391092 in words is "one million, three hundred ninety-one thousand, ninety-two".