1394090 has 8 divisors (see below), whose sum is σ = 2509380. Its totient is φ = 557632.

The previous prime is 1394089. The next prime is 1394131. The reversal of 1394090 is 904931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1181569 + 212521 = 1087^2 + 461^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69695 + ... + 69714.

2^1394090 is an apocalyptic number.

1394090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1394090 is a deficient number, since it is larger than the sum of its proper divisors (1115290).

1394090 is a wasteful number, since it uses less digits than its factorization.

1394090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139416.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1394090 is about 1180.7158845379. The cubic root of 1394090 is about 111.7112566656.

The spelling of 1394090 in words is "one million, three hundred ninety-four thousand, ninety".