1391084 has 6 divisors (see below), whose sum is σ = 2434404. Its totient is φ = 695540.

The previous prime is 1391083. The next prime is 1391087. The reversal of 1391084 is 4801931.

It is a super-2 number, since 2×1391084² = 3870229390112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1391081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173882 + ... + 173889.

It is an arithmetic number, because the mean of its divisors is an integer number (405734).

2^1391084 is an apocalyptic number.

It is an amenable number.

1391084 is a deficient number, since it is larger than the sum of its proper divisors (1043320).

1391084 is a wasteful number, since it uses less digits than its factorization.

1391084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347775 (or 347773 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1391084 is about 1179.4422410614. The cubic root of 1391084 is about 111.6309065960.

The spelling of 1391084 in words is "one million, three hundred ninety-one thousand, eighty-four".